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Source Credit: Nissan USA

NASHVILLE, Tenn. – A new Maxima 40th Anniversary Edition joins the 2021 Nissan Maxima lineup when it goes on sale this fall. The limited production package builds on the fully equipped Maxima Platinum grade and includes:

  • Unique two-tone Ruby Slate Gray Pearl exterior color with black roof
  • Exclusive 19-inch gloss black aluminum-alloy wheels
  • Black exterior finishers and trim badges, including 40th Anniversary badge
  • Black exhaust finishers
  • Red semi-aniline leather-appointed seating with 40th Anniversary embossing
  • Red contrast interior stitching
  • Satin Dark Chrome interior faceted finishers
  • White speedometer and tachometer faces reminiscent of past Maxima models
  • Heated rear seats

Maxima is the longest continuous running Nissan nameplate in the U.S., linking back to 1981, the year Maxima was first sold here.

As the flagship of Nissan’s vibrant sedan lineup, which includes the trio of recently redesigned Altima, Sentra and Versa models, Maxima continues to garner prestigious industry awards. In June, Maxima was named the top vehicle in the Large Car segment of J.D. Power Initial Quality Study for the third consecutive year. In July, Maxima led J.D. Power’s APEAL Study Large Car category, again for the third year in a row and 30 points ahead of the segment average. It has also achieved a Top Safety Pick rating from the Insurance Institute for Highway Safety for five straight years1.

In addition to the 40th Anniversary Edition, the 2021 Maxima will be offered in SV, SR and Platinum grade levels – each equipped with a 300-horsepower 3.5-liter DOHC 24-valve V6 engine and Xtronic transmission.

The Original “4-Door Sports Car”
Today, Maxima is known for its premium level of luxury with performance and sportiness. For generations, before the arrival of diamond quilted Ascot leather-appointed seats, Satin Birdseye Maple wood finishers and 11-speaker Bose® Premium Audio system, it was simply known as the “4-Door Sports Car.”

Now in its eighth-generation, Maxima’s storied history as an authentic sports sedan goes back even farther to the Datsun Bluebird 810 of the late 1970s. The 1981 Datsun 810 – often described as a larger interpretation of the legendary Datsun 510 – was the first to carry the Maxima nameplate.

Dropping the 810 name, the true first generation Maxima featured the engine of the 240Z and a 5-speed manual transmission at a time when industry standard was a 4-speed box or less. Next came the second-generation 1985 – 1988 Maxima, which was the first to offer a V6 engine and front-wheel drive. It was the last to be available with a station wagon body.

The third-generation Maxima emerged in 1989 as the true 4DSC. Considered the best affordable sedan in the world by many, it was powered by a 160-horsepower 3.0-liter V6 and went head-to-head against European sports sedans in road test comparisons by leading automotive publications.

Not willing to rest on its laurels, the Nissan engineering team came back in 1995 with a larger body design and featuring a new engine, new rear suspension and 30 extra horsepower (190-hp). It was chosen as Motor Trend’s Import Car of the Year and was included on Car and Driver’s 10 Best list.

Three more generations followed quickly. The fifth-generation Maxima, introduced in 2000, received the legendary VQ35 V6 and a boost to 255-horsepower (from model year 2002). In 2004, the sixth-generation Maxima upped the luxury factor substantially. The seventh-generation added new aggressive styling to go along with the now-290-horsepower 3.5-liter V6.

In 2016, the current-generation Maxima debuted sporting the V-Motion front end and floating roof design. A minor facelift followed in 2019 with enhancements to its safety, security and connectivity technology.

Over four decades, Maxima has remained faithful to its heritage as a true performance sedan and brand flagship – as well as to its large owner base, which is among the most loyal among all Nissan models. With the addition of the special 40th Anniversary Edition, Maxima adds to its long history once again.

More information on the full 2021 Maxima lineup, including pricing and specifications, will be announced closer to its fall 2020 on-sale date.

Introducing The Nissan Maxima 7GM/8GM Shockwave Tuned Helmholtz Exhaust System. This exhaust works on both 7thgens (2009-2015) and 8thgens (2016 to Present).

Full Exhaust Price: $1,429.00
ART Y-Pipe Price: $592.00

Order Link: https://motordyneengineering.com/product-category/nissan-maxima/nissan-maxima-exhaust/

A high quality build, completely polished, TIG welded Stainless Steel 304 tubing with a 2.5″ inlet and dual 3″ outlets utilizing carefully tuned Helmholtz resonators for precise sound control. This high performance system provides a bright and deep warble with high detail in the exhaust note. At idle and cruising speed the sound level is clean and moderate but when you step on it and bring it up to high RPM it really earns its name the Shockwave.

The uniquely shaped midpipe muffler allows for gradual wave expansion into the sound dampening fiberglass for greatly reduced drone and rasp. The midpipe muffler uses 3 stages of high, mid and low frequency sound attenuation. The first stage of the is 3.5″ diameter and it works like a small glass packed resonator. A small resonator is effective at reducing the high frequency content of rasp while a large muffler is better at lower frequencies. The 3.5″ section then expands to a 5″ diameter glass packed resonator where the sound then expands to a thicker layer of fiberglass for midrange sound attenuation. The back end of the midpipe muffler is leads into an axially aligned protruding annular orifice that gives the equivalent of a 8″ diameter. The total sound reduction is performed in three stages of high, mid and low frequencies for broad band sound reduction. Smooth deep sound with pure straight through flow. The flow is then divided into a dual 3″ axle-back section that uses 2 large Helmholtz side-branch resonators for sound control. Combined with the ART y-pipe the result is straight through flow with deep sound, no drone and no rasp.

Sound Clips:

 

 

 

 

 

 

 

 

 

Photo Gallery:

8thgen Maxima on Vossen Flow Formed Series VFS6 Wheels
Wheels: VOSSEN FLOW FORMED SERIES: VFS6 ...
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8thgen Maxima on Vossen Flow Formed Series VFS6 Wheels

Kris Villafane's "Red Bandit" 8thgen Nissan Maxima
Owner: Kris Villafane Social Media: Year: 2016 Model: Nissan Maxima Color: Vvivid Red Chrome ...
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Kris Villafane’s “Red Bandit” 8thgen Nissan Maxima

Tyrique Abraham's Finessed 2016 8GM
Owner: Tyrique Abraham Year: 2016 Model: Maxima Color:  Coulis Red ...
View More

Tyrique Abraham’s Finessed 2016 8GM

 

If you are reading this article, you are very likely trying to resolve P0420/P0430 without having to spend a lot of money on the issue. Most of the time, the codes are due to a bad clogged catalytic converter or bad O2 sensors. Before replacing the O2 sensor, be sure to do the spacer fix modification first because O2 sensors are not cheap.

There aren’t usually any drivability issues associated with these codes. For most people, the first sign that anything is wrong at all is the check engine light. Below are the typical check engine lights you would normally get:

  • P0420 NISSAN – Catalyst System Efficiency Below Threshold Bank 1
  • P0430 NISSAN – Catalyst System Efficiency Below Threshold Bank 2

The Fix

You can eliminate the codes by using a spark plug non-fouler which tricks your engine computer to think that everything is working fine. This simple trick will pull the O2 sensor away from the exhaust flow and the computer will think the Catalytic converter is working properly. This will work if you remove the catalytic converter or have a bad cat. It’s very simple and cheap to do. Below is a video on how to perform the fix:

You can also buy them pre-made on eBay if you do not want to drill.

 

Make Your Own Spacers/Foulers

You can buy these non-fouler spacers at your local parts store. You can get them from Advanced Auto or Autozone for about $7-8 bucks.

You now need to drill out 1 of the non-foulers using a 1/2″ drill bit. When finished this is what it will look like.

O2 Sensor inserted in the modified non-fouler

Second, unmodified non-fouler now installed on modified non-fouler, then threaded into the pipe

Reference Photos

Below are photos of the spacers installed and 100% working on Nissan Maximas by generation. After installing the spacers, the CEL codes went away.

5thgen Nissan Maxima

6thgen Nissan Maxima

7thgen Nissan Maxima

If you are DIY person and love working on your Nissan Maxima, then this tool is a MUST HAVE! When you go to the Nissan dealer, the person working on your car typically uses a tool called a Nissan Consult. The Nissan Consult that the dealer uses costs thousand of dollars and is only available to dealers. By using the Nissan DataScan software, a laptop and a generic VAG COM OBDII adapter you can achieve just about the same level of on-board diagnosis that $5,000 Nissan Consult provides. This software allows you to:

  • Check CEL codes
  • Check/Reset ABS and SRS-Airbag Faults
  • Check/Reset TCM Codes
  • Adjust timing
  • Perform Idle Air Relearn
  • Reset ECU learned settings
  • Data-log
  • Program keys
  • Check Emissions Readiness Monitors
  • Active Test temporary modify some of the engine parameters for testing purposes
  • And Much much more….

The software itself costs $55.00 and generic cable costs around $7.00-$8.00. 

Software License Purchase Link: Nissan DataScan II

Software Download Links:

OBD2 Cable eBay Link: KKL 409 VAG COM OBD2 Cable

You can find the cables on eBay between $6.00-$8.00 shipped. Search for the following keywords on eBay and you will find it: “KKL 409.1 VAG-COM OBD2 USB Cable

Below are all the functions it provides:

ECU Part Number

This is the main window of the NDSII software which shows the ECM Nissan Identification part number. Basic and Advance Functions can be selected by clicking on the buttons, using the shortcut keys (F1 – F11) or using the Menu bar. Most functions except Data Replay and Log Analyser are disabled until communication with the ECU is successfully established.

Progress bar at the bottom indicates communication between the ECU and PC. If the bar is not moving there is no data being received from the ECU.

Data Display Settings

This window is used to assign parameters to be displayed by the Data Display function. Only parameters that are supported by the currently connected ECU are available for selection. Gauges are counted from left to right, top to bottom. Multiple gauges can monitor the same parameter.

Data Logging ECM

Selected parameters can be logged to a file. This function can also be accessed from the Data Display window. The data log file can be analysed using the Data Replay or Log Analyser functions.

Self Diagnostics ECM

Self Diagnostics function allows users to read and reset engine ECU error codes.

Idle Adjustment

Idle Adjustment function allows users to adjust the base idle RPM. The setting is saved to the ECU and it does not reset with engine restart.

Timing Adjustment

Timing Adjustment function allows users to adjust the base ignition timing. The setting is saved to the ECU and it does not reset with engine restart.

Active Test ECM

Active Test allows users to temporary modify some of the engine parameters for testing purposes. They return to their original values when a function is stopped, PC disconnected or engine restarted.

Note: It is possible to damage the engine if the A/F Base % functions is used to excessively modify fuel delivery. Likewise the engine may overheat if the Engine Temperature is set to low for a long period of time. Do not use those functions if you are not sure how they will effect your engine.

Work Support

Work Support functions allow users to perform some of the advance service procedures. Those procedures may need to be performed after replacement parts are installed.

Clear Self Learn – clears the A/F Base SL map learned by the ECU.

Idle Air Volume Learn – is an operation to learn the fully closed position of the throttle valve.

Program Immobiliser Key – allows to register the Nissan transponder keys with the Immobiliser Note: The immobiliser security PIN CODE needs to be known. Initially all registered keys will be erased and all keys will need to be reregistered.

Cylinder Power Test

Cylinder Power Test function can be used to identify cylinder that is under performing. This function allows shutting down individual cylinders. If all of the cylinders are producing the same amount of power the engine RPMs will drop exactly the same amount on each cylinder that is cancelled.

Log Analyser is used to review log files previously generated by with Data Logging function. Graphs are drawn by selecting boxes next to parameter value. Graph colours match the parameter value colours.

Speed Test

Speed Test is a unique function for measuring car’s acceleration performance. Predefined or user specific tests can be used. Due to the low resolution of Nissan speed sensors, measurements should only be used as a guide and not a true reflection of car’s performance.

Note: This function should not be used while driving on public roads.

Address Watch

Address Watch function is used for monitor specific ECU memory addresses. By monitoring a memory address extra information can be retrieved that is not normally available using Consult II protocol. A knock sensor reading can be obtain using this method if knock sensor memory address is known.

Wideband O2 sensor

Nissan DataScan II also supports wideband Air/Fuel ratio meters from Innovate Motorsports. A second serial port is used to connect to the controller and collect data.

The data from the wideband meter can be displayed or logged in conjunction with other engine parameters using the Data Logging function.

ECU Part Number BCM

The BCM tab shows the BCM Nissan Identification part number. Basic Functions can be selected by clicking on the buttons or using the Menu bar. All functions are disabled until communication with the ECU is successfully established.

Progress bar at the bottom indicates data being send between the ECU and PC. If the bar is not moving there is no data being received from the ECU.

Note: Some vehicles may use K line for diagnostics of engine ECU (ECM) but still use DDL1 line for diagnostics of other control modules. This software does not support diagnostics over the DDL1 line. Some of those models are: X-trail, Maxima, Patrol.

Self Diagnostics BCM

Self Diagnostics function allows users to read and reset BCM error codes.

Active Test BCM

Active Test allows users to temporally activate some of the functions of the BCM. This is usually used to manually test the functionality of the systems controlled by the BCM.

Note: Functions not supported by the BCM are disabled (grayed out).

ECU Part Number TCM

The TCM tab shows the TCM Nissan Identification part number. Basic Functions can be selected by clicking on the buttons or using the Menu bar. Most functions except Data Replay and Log Analyser are disabled until communication with the ECU is successfully established.

Progress bar at the bottom indicates data being send between the ECU and PC. If the bar is not moving there is no data being received from the ECU.

Note: Some vehicles may use K line for diagnostics of engine ECU (ECM) but still use DDL1 line for diagnostics of other control modules. This software does not support diagnostics over the DDL1 line. Some of those models are: X-trail, Maxima, Patrol.

Data Logging TCM

Selected parameters can be logged to a file. This function can also be accessed from the Data Display window so the data can be logged while it is displayed. The data log file can be analysed using the Data Replay or Data Analyser functions.

Self Diagnostics TCM

Self Diagnostics function allows users to read and reset TCM error codes.

ECU Part Number ABS

The ABS tab shows the ABS Nissan Identification part number. Basic Functions can be selected by clicking on the buttons or using the Menu bar. Most functions except Data Replay and Log Analyser are disabled until communication with the ECU is successfully established.

Progress bar at the bottom indicates data being send between the ECU and PC. If the bar is not moving there is no data being received from the ECU.

Note: Some vehicles may use K line for diagnostics of engine ECU (ECM) but still use DDL1 line for diagnostics of other control modules. This software does not support diagnostics over the DDL1 line. Some of those models are: X-trail, Maxima, Patrol.

Data Logging ABS

Selected parameters can be logged to a file. This function can also be accessed from the Data Display window so the data can be logged while it is displayed. The data log file can be analysed using the Data Replay or Data Analyser functions.

Self Diagnostics ABS

Self Diagnostics function allows users to read and reset ABS error codes.

Work Support ABS

Work Support functions allow users to perform advance service procedures. Those procedures may need to be performed after replacing parts.

Steering Angle Sensor Reset – After removing/installing or replacing VDC/TCS/ABS control unit, steering angle sensor, steering components, suspension components, and tires, or after adjusting wheel alignment, make sure to adjust neutral position of steering angle sensor before running vehicle.

ECU Part Number SRS

The SRS tab shows the SRS Nissan Identification part number. Basic Functions can be selected by clicking on the buttons or using the Menu bar. All functions are disabled until communication with the ECU is successfully established.

Progress bar at the bottom indicates data being send between the ECU and PC. If the bar is not moving there is no data being received from the ECU.

Note: Some vehicles may use K line for diagnostics of engine ECU (ECM) but still use DDL1 line for diagnostics of other control modules. This software does not support diagnostics over the DDL1 line. Some of those models are: X-trail, Maxima, Patrol.

Self Diagnostics SRS

Self Diagnostics function allows users to read and reset SRS error codes.

Note: Recorded faults are historical and can not be cleared.

Work Support

Work Support functions allow users to perform the advance service procedures. Those procedures may need to be performed after replacement parts are installed.

Program Immobiliser Key – allows to register the Nissan transponder keys with the Immobiliser Note: The immobiliser security PIN CODE needs to be known. Initially all registered keys will be erased and all keys will need to be reregistered.

OBDII Self Diagnostics

OBDII Self Diagnostics function allows users to read and reset ECU error codes.

OBDII Monitor Status

OBDII Monitor Status shows the current status of various monitoring systems used by the car’s engine management system.

OBDII Log Analyser

Log Analyser is used to review log files previously generated by with Data Logging function. Graphs are drawn by selecting boxes next to parameter value. Graph colours match the parameter value colours.

OBDII Fuel System Satus

OBDII Fuel System Status can be used to check if the car’s fuel system is running in Closed Loop mode.

Fuel systems do not normally refer to injector banks. They are intended to represent completely different fuel systems that can independently enter and exit closed loop fuel. Banks of injectors on a V-engine are generally not independent and share the same closed-loop enablement criteria.

OBDII Data Logging

Selected OBDII parameters can be logged to a file. The data log file can then be analysed using the Log Analyser function.

Due to the slow nature of OBDII protocol it’s recommended to log only the required parameters.

Member Credit: xlack

This is from a G37 but the procedure pretty much identical to Nissan Maximas.

OEM Oil Pan completely stripped of silicon residue:

JWT Oil Pan Spacer:

New silicon applied:

Brush used to remove silicon remains:

This bolt has to be bended in order for the oil pan spacer to fit. (guy from 370z forum had it cut off, but is not necessary):

Bolt is knocked back into position:

Member Credit: Angel Peña, Jose Rivera & Azeem Malik

When you first glance at the 2019 Nissan Maxima, you’ll quickly take notice of the updated exterior headlights and tail lights. Now if you already own a 2016-2018 8thgen you’ve likely already asked the big question…. will the 2019+ Maxima headlights and tail lights fit my car? Below is what you need to know:

Front: The headlights do fit fine. But as noted in the pics below, there is a small gap under between the bumper and headlight. But the good news is that if you swap the bumper, headlights and grille… you will be all set. This is exactly how the 04-06 6thgen Maxima’s swapped to the 07-08 refreshed bumper and headlights. It also appears you may get a “headlight error” on the dash after the swap. When we get more info, we will update this post on how to resolve it.

Rear: Direct Fit. Plug-n-Play. Will not throw any error codes.

Note: For the rear, you may need to get some resistors to avoid hyper-flashing if you have upgraded LED bulbs. Resistors are just a few bucks and a quick fix. You can get the on eBay for $5-$6 bucks. Search for 50W 6ohm Load Resistors. The headlights themselves are around $800-$1K for the full set.

Part Numbers:

Front:

  • 26545-9DJ0A – Backup Lamp Assembly-Left-Hand
  • 26540-9DJ0A – Backup Lamp Assembly-Right-Hand

Rear (Total Approx. $740):

  • 26545-9DJ0A – Backup Lamp Assembly-Left-Hand (Approx. Price: $130.00)
  • 26540-9DJ0A – Backup Lamp Assembly-Right-Hand (Approx. Price: $130.00)
  • 26555-9DJ0A – Combination Lamp Assembly-Rear, Left-Hand (Approx. Price $240.00)
  • 26550-9DJ0A – Combination Lamp Assembly-Rear, Right-Hand (Approx. Price $240.00)

Front Headlights

Original

Swapped to 2019 Headlights with 2016 Bumper

Here you will notice the small gap.

With Full 2019 Conversion… Much Better and perfect fitment:

Rear Tail Lights
Original 

Swapped to 2019 Tail Lights. Direct fit and plug-n-play. 

Video’s of Rear Tail Lights by Jose Rivera

Member Credit: Jack Sulaiman & Geraldo Martin

Price: $699.99

Order Link: https://www.phoenixautomotiveinc.com/collections/nissan/products/10-4-tesla-style-vertical-screen-android-navigation-radio-for-nissan-maxima-2016-2017?fbclid=IwAR2cfcsGyrmZcT7Vb07aN2GquU-Vwo361FlDN09ZZZmF6TEgAdboLjz88Fc

Other Notes:

  •  Plug and play
  • Recommend you get the 2GB Ram version.
  • Took about 2 weeks. Came from Hong Kong via DHL
  • IDO NOT disconnect the airbag indicator light on the factory stereo. All you have to do is unclip it from the factory stereo and leave it in the console behind the new stereo.

Other Reported Issued by Jack:

  • 1. The clock in the gauge cluster does not sync automatically so all you have to do to remedy that is disconnect the battery leads and reconnect at midnight lol
  • The screen does not display the correct thermostat temp even though the AC and all HVAC controls work flawlessly. (I am in contact Phoenix Android radios and waiting to see how they will fix this, (most likely be a software update/patch)
  • Controls all work, only issue is the temps are wrong on the display. The range showing is 89f up to 93f with increments of one. But on 89f it is like 60f. This will be resolved with an update
  • Bluetooth call audio on the receivers end (the person you’re talking to) isn’t that great probably because of the microphone placement. There might be something in the settings to change but I haven’t fooled around with it much.
  • Other than that, this thing is a million times better than the factory stereo. Also sound quality is way better because now you have a multiband EQ
  • I’ve never installed a car stereo before and I took me about 3 hrs in total
  • It came preloaded with google maps. This is based on android. The the possibilities are endless. You can download other nav apps if you like with offline maps instead of having to use an internet connection. I hooked up the gps antenna right behind the head unit and it works really good
  • I don’t have bose, but it seems that it is compatible with bose. There are two different Maxima settings for the unit. So I would assume it is compatible. It would be best to ask them .

 

CVTz50 is an Android App that allows you to perform various diagnostics on your CVT transmission. No need to go buy special scanners, gauges and/or pay your Nissan dealer a “special diagnostic fee“.  This app will tell you everything you need to know about your CVT including some additional nice features such as resetting your CVT fluid deterioration counter and adjusting your engine brake levels. Many 7thgen Maxima owners like to use this app to monitor the CVT temperature levels after installing an additional transmission oil cooler.

Special thanks to Eric Cruz for finding and validating this app for Nissan Maximas. 

App Price: $4.99
Download Link: https://play.google.com/store/apps/details?id=com.cvtz50.cvtz50

You will need an ELM327 interface to use the app. You can buy them on eBay for around $15 bucks. It must be an ELM327 1.5 built on original Microchip PIC18F25K80. To ensure your ELM327 interface will work, you can try the demo app here: https://play.google.com/store/apps/details?id=com.cvtz50.cvtz50demo

Applications

  • 2007-2008 6thgen Maxima
  • 2009-2015 7thgen Maxima
  • 2016+ 8thgen Maxima
  • Also supports Nissan Murano Z50/Z51, partial support for other vehicles equipped with Jatco CVT – Nissan Teana, X-Trail, Qashqai, Juke, Wingroad; Mitsubishi Outlander, Lancer; Renault Koleos; Suzuki Kizashi; Chery and others

Main Features

Information Credit: http://cvtz50.info

  • Read and clear CVT Diagnostic Trouble Codes (DTC)
  • Read and clear engine DTC
  • Read and reset CVT fluid deterioration counter (CVTF deterioration date)
  • Adjustment of engine brake level
  • Adjustment of Idle RPM and ignition timing; Idle air volume learning
  • CVT monitoring: real-time monitoring of CVT fluid temperature, pressures, deterioration, gear ratio and many others
  • Monthly statistics for CVT temperature, pressure in special conditions, failed gear switching, mileage, fuel consumption, run hours and CVTF deterioration trend

Quick start

  • Install latest CVTz50 version from Google Play
  • For Bluetooth version of ELM327 interface: Connect ELM327 adapter to OBD-II diagnostic interface of the vehicle with ignition turned on and perform Bluetooth pairing of ELM327 adapter in Bluetooth settings of your Android device. If ELM327 adapter is named “OBDII” in the list of Bluetooth devices, then CVTz50 will be selecting this adapter automatically. If ELM327 adapter has different name, then this name should be set in CVTz50 options manually, otherwise CVTz50 will be asking to select adapter after each CVTz50 startup.
  • For WiFi version of ELM327 interface: Connect ELM327 adapter to OBD-II diagnostic interface of the vehicle with ignition turned on and connect your Android device to WiFi network of ELM327 adapter. In CVTz50 menu, select “Use WiFi ELM327” and make sure that IP-address and port are the same as specified in user’s manual of the adapter. Some Android devices require turning on the option “Connect to WiFi network even if it doesn’t provide Internet connectivity”.
  • Start CVTz50 and verify the connection by pressing CVT Data Monitor button. If ELM327 connection established successfully, CVTz50 will show connection progress and enter data monitoring mode.

Reading and erasing DTC

To read Diagnostic Trouble Codes stored in CVT or in engine, press button Read/Clear CVT DTC or Read/Clear Engine DTC. After successful DTC reading, CVTz50 will show number of errors stored in corresponding control module and list of the codes.

In order to erase CVT/engine DTC, press and hold corresponding button, then confirm erasing by selecting YES in confirmation dialog.

 

Reading and resetting CVT Fluid Deterioration counter

Press Read/Clear CVTF Deterioration button to read deterioration data.

Nissan recommends to change CVT fluid if deterioration exceeded 210000 points. Note that on majority of the vehicles the deterioration counter takes into account CVT operation only in high temperature conditions (the counter increases only when CVT temperature is above 90°C). There might be other reasons to replace CVT fluid – they shall be considered even if deterioration counter is significantly below the threshold.

After replacing CVT fluid, CVTF Deterioration data should be cleared. To perform deterioration data erasing, hold Read/Clear CVTF Deterioration button and confirm the operation by selecting YES in confirmation dialog.

Engine Brake adjustment

Press Engine Brake Adjustment button to change the level of engine braking. Current brake level will be retrieved from CVT control module and marked in the selection dialog. Select new brake level and confirm the change by pressing OK or press Cancel to exit without saving. Nissan is not recommending to select levels +1, -1 and -2.
Nissan is not recommending to select levels +1, -1 and -2.

Engine braking can be adjusted only on Nissan-based vehicles. Mitsubishi, Peugeot, Citroen, Jeep do not provide such ability in their CVT control firmware.

CVT Data Monitor mode

Press CVT Data Monitor button to start realtime monitoring of CVT parameters. Data monitoring will be also started automatically if no buttons pressed within 10 seconds after CVTz50 launched. In this mode, CVTz50 shows majority of significant realtime CVT parameters that can be seen in official diagnostic tool Consult-II:

  • Engine speed, RPM (corresponding Consult-II parameter: ENG SPEED)
  • Gear lever position or manual gear number in manual mode (in brackets when brake pedal depressed)
  • Vehicle speed, KM/H (corresponding Consult-II parameter: VEHICLE SPEED). Some vehicles may report here values less than real vehicle speed. For such cases, it is possible to manually select speed source: CVT speed sensor, ABS speed sensor, or speed recognized by engine control system. Speed source selection menu can be opened by long click on speed value in monitor mode.
  • Accel – accelerator position, values in range from 0.0 to 8.0 (corresponding Consult-II parameter: ACC PEDAL OPEN)
  • Engine horsepower (value calculated basing on engine speed and load), hp
  • Engine torque (value calculated by control module basing on engine speed and load), N·m (corresponding Consult-II parameter: VENG TRQ)
  • AWD %:% F:R – AWD solenoid control current and corresponding torque distribution between Front and Rear axis from 100%:0% to 50%:50% (only for Nissan-based vehicles) (corresponding Consult-II parameter: ETS SOLENOID)
  • Vehicle acceleration, g (corresponding Consult-II parameter: G SPEED)
  • Instant fuel consumption in liters per 100km and in liters per hour; fuel level sensor, distance to empty calculated by CVTz50, average fuel consumption, fuel consumed, total travel distance and travel time (to reset these values calculated by CVTz50, press and hold any of these numbers)
  • Engine – engine coolant temperature and color indicator of temperature range (<20°C COLD; 20-80°C WARM; 80-100°C OK; 100-120°C HOT; >120°C HOTTER) (corresponding Consult-II parameter: COOLAN TEMP/S)
  • Intake – intake air temperature (measured at mass airflow sensor) (corresponding Consult-II parameter: INT/A TEMP SE)
  • CVT Temp/Count – CVT fluid temperature in 2 different units: Celsius degrees and in “Counts” displayed by other diagnostic tools; and color indicator of temperature range (<20°C COLD; 20-50°C WARM; 50-90°C OK; 90-110°C HOT; >110°C HOTTER) (corresponding Consult-II parameter: ATF TEMP COUNT)
  • Clutch Lockup – torque converter lockup current; and color indicator showing up when torque converter is in locked up state (corresponding Consult-II parameter: ISOLT1)
  • Slip Rev – RPM slippage inside torque converter (shall be around 0 when torque converter is locked up) (corresponding Consult-II parameter: SLIP REV)
  • Trq Ratio – torque ratio of torque converter (corresponding Consult-II parameter: TRQ RTO)
  • Virt. Gear – approximate number of virtual gear which corresponds to current gear ratio
  • Gear Ratio – CVT gear ratio, target and actual (corresponding Consult-II parameter: DGEAR RATIO / GEAR RATIO); for transmissions with auxiliary gear (like CVT7) additional indicator ▲ shows that auxiliary gear switched from low-gear mode to high-gear mode
  • STM Step – Step Motor position, target and actual (corresponding Consult-II parameter: DSTM STEP / STM STEP), only for transmissions equipped with Step Motor (Jatco CVT prior to CVT7)
  • Approximate final torque after considering all gear ratios (based on engine RPM, load, current gear ratios, only for Nissan Murano)
  • SEC PRS Target – target CVT fluid pressure in secondary pulley, MPa (corresponding Consult-II parameter: TGT SEC PRESS)
  • SEC Pressure – actual CVT fluid pressure in secondary pulley, MPa (corresponding Consult-II parameter: SEC PRESS)
  • sec max – maximum CVT fluid pressure in secondary pulley observed during current CVTz50 session, MPa
  • PRI Pressure – actual CVT fluid pressure in primary pulley, MPa (corresponding Consult-II parameter: PRI PRESS)
  • pri max – maximum CVT fluid pressure in primary pulley observed during current CVTz50 session, MPa
  • Line PRS Tgt – target LINE pressure, MPa (corresponding Consult-II parameter: LINE PRS)
  • LU – target torque converter lockup pressure, MPa (corresponding Consult-II parameter: LU PRS)
  • Deterior. – CVT Fluid Deterioration, value in brackets shows deterioration increase during current CVTz50 session (corresponding Consult-II parameter: CVTF DETERIORATION DATE)
  • Battery – TCM (transmission control module) power supply voltage (corresponding Consult-II parameter: VIGN SEN) and voltage on OBD2 socket, V
  • Timestamp of last monitoring data update. In case if DTC appear in engine control or CVT control, then timestamp will be replaced with DTC indicator – yellow in case of engine DTC and red in case of CVT DTC.

Data updates every 5-8 seconds when CVTz50 reads data from CVT control module, engine control module and AWD control module. Update frequency can be increased to 5-8 updates per second by turning off reading of engine and AWD in CVTz50 menu.

 

Data charts

Data chart showing last 200 values of specific CVT parameter can be opened by pressing parameter name or value in CVT Data Monitoring mode. Red line is the selected parameter and blue line is Vehicle Speed.

 

Main menu (settings)

  • Monitor CVT – Turning on/off reading of data from CVT control module
  • Monitor Engine and DTC – Turning on/off reading of data from engine control module, and reading CVT and engine DTC (if this option turned off, CVT monitoring will be able to indicate only critical DTC or DTC already presented before CVTz50 launch)
  • Monitor AWD – Turning on/off reading of data from AWD control module
  • Start Data Monitor / Pause Data Monitor – this command allows to pause/resume data monitor without closing data monitor window
  • Data Logging To File – Turning on/off saving logs to files cvtz50.txt, cvtz50_params.txt and cvtz50_engine.txt
  • Consumption Correction – setting fuel consumption correction coefficient for case if real consumption significantly differs from consumption calculated by CVTz50
  • Alt. Consumption – Alternative method of fuel consumption calculation (for Nissan Murano). This method can be more precise comparing to default
  • Long Term Consumption – Turning on/off saving of travel distance and fuel consumption between CVTz50 sessions. If turned off, average fuel consumption will be cleared at every CVTz50 start
  • Switch Color Theme – switching between dark and light color themes (requires CVTz50 restart)
  • Force English Interface – forcing English interface language for those who prefer to disable localized translation
  • Font autoscaling – Turning on/off automatic selection of font size in Data Monitoring mode
  • Tune font scale – correction of font size in Monitoring mode for case if text labels overlap
  • Voice Notifications – voice notifications for CVT temperature levels (notifies when CVT fluid reaches temperature levels 20°C, 50°C, 90°C) and new CVT and engine DTC
  • Keep CVTz50 in foreground – prevent Android from closing CVTz50 running in low memory condition
  • Change default Bluetooth adapter – setting adapter name that will be selected by CVTz50 automatically without need of manual adapter selection from the list. Bluetooth MAC address in format “12:34:56:78:9A:BC“ allowed here (if MAC address specified, CVTz50 will not show adapter selection dialog even if there is no paired device with such MAC address).
  • Turn off Bluetooth on exit – turn off Bluetooth on Android device upon exiting CVTz50 in case if Bluetooth was turned on by CVTz50 on startup
  • Bluetooth Compat (*) – Bluetooth compatibility modes (different modes of Bluetooth security, speed). Compatibility settings should be used only in case of inability to setup Bluetooth connection or in case of Bluetooth connection instability.
  • Always Reconnect – more aggressive connection/reconnection mode. When enabled, CVTz50 will be continuously trying to connect to ELM327 which may lead to high battery consumption
  • ELM327 v2.15 Workaround – compatibility mode for “bad” ELM327 adapters
  • Use WiFi ELM327 – use WiFi variant of ELM327 adapter instead of Bluetooth. After selecting this option, additional dialog will be shown allowing to set adapter IP address and port.

Primary Pulley Pressure automatic test during stop

CVTz50 automatically tracks primary pulley pressure while vehicle stopped in D position after CVT fluid temperature reached 50°C and Step Motor got position 4. Under these conditions, primary pulley pressure should not drop below 0.5MPa. Once these conditions met, CVTz50 will display additional information block near Primary Pulley Pressure – Step4 %/min/avg showing percentage of Step Motor setting to 4 during continuous braking from 40km/h to 0km/h (more is better), minimum and average pressure during stop (closer to 0.7MPa is better). The block will be highlighted by yellow if minimum value drops below 0.5MPa; highlighted by red if drop below 0.3MPa.
This automatic test is applicable only to CVTs equipped with Step Motor (prior to CVT7).

Pressure test during acceleration

During intensive acceleration from 0km/h (engine speed more than 3000 rpm), primary and secondary pulley pressure shall reach at least 5MPa. This test shall be performed in CVT-only monitoring mode (monitoring of engine and AWD turned off in CVTz50 menu) to ensure enough measurement sampling rate. Maximum primary and secondary pressures will be shown in fields sec max and pri max.

Note: maximum values can be reset only by exiting CVTz50 so cvtz50 should be restarted before each attempt.

Acceleration time measurement

In CVT-only monitoring mode (monitoring of engine and AWD turned off in CVTz50 menu) if accelerator pedal fully depressed, CVTz50 automatically measures acceleration time 0-50km/h, 0-100km/h, 0-150km/h, 0-200km/h. Measurement result will be shown near indication of gear lever position. Measurement accuracy is around 0.25s if data updated 4 times per second.

Monthly Statistics

During monitoring, CVTz50 collects statistics on CVT temperature conditions, pressures, milage, fluid deterioration, engine runtime and other data. Statistics button opens new window showing graphical representation of collected statistical data which can be checked for any trends (like month-by-month pressure decrease illustrating fast CVT wear). Backup copy of statistical data is stored in Google account (if Android device is linked with Google account and applications data backup was not turned off during Android device setup) and will be restored in case of CVTz50 re-installation or during migration to new Android device using same Google account (if during migration to new device user allow “restore applications and their data from previous device”).

  

CVT Information

CVT Information button opens new window showing following information retrieved from TCM (transmission control module):

  • Calibration Identifier – set of digits which is usually unique for each CVT assembly. Calibration data is stored in valve body (on CVT prior to CVT7) and copied to TCM during pairing of specific valve body with specific TCM
  • Last 5 previous CVT DTC and time of their recording by TCM in “warm engine run hours” (not all DTCs stored here by TCM)
  • CVT-A and CVT-B parameters which are showing number of occurrences of error conditions
  • Run hours – engine run hours counted by TCM. Rounded up to 10-minute intervals during each engine start. Counter resets when erasing TCM EEPROM (e.g. during TCM firmware update or TCM replacement). Counter stops increasing after reaching 10922 hours.
  • Run hours (warm engine) –run hours of warmed up engine. Counter stops increasing after previous counter reached 10922 hours.

Idle Rpm adjustment and Ignition Timing adjustment

Idle Rpm Adjustment can be started by short pressing of button Idle Rpm Adj / Idle Air Learn (Nissan).
Ignition Timing adjustment can be started by long pressing of button Power Balance / Ign Timing (Nissan).
After starting an adjustment, CVTz50 reads current adjustment levels from engine control module and mark it in adjustment selection window. Press OK to save newly selected adjustment value to engine control module or press Cancel to quit without saving.

Adjustments can be performed only on warmed up engine. Idle Air Volume Learning might be required before performing these adjustments.

 

Idle Air Volume Learning

Long pressing of Idle Rpm Adj / Idle Air Learn (Nissan) button initiates the learning procedure. Learning should be performed on warmed up engine, all electronic load need to be switched off. Idle Rpm Adjustment and Ignition Timing adjustment need to be set to 0 before starting this procedure.

Power Balance Test

Power Balance dialog allows to temporary disable fuel injection in specific cylinder. Dialog title shows current engine RPM and minimum RPM observed after last switching of cylinders. This test allows to compare performance among cylinders.

Custom Commands

CVTz50 allows to send any custom commands or command series to ELM327 or to any vehicle control unit.

CVTz50 optionally can connect to CVT control module or to engine control module before executing entered custom command.

Logging CVT parameters to file

Log containing main data exchange between CVTz50 and ELM327 adapter is stored in file cvtz50.txt which can be found on memory card of Android device.

CVT realtime parameters recorded during monitoring are stored in file cvtz50_params.txt which can be opened by Microsoft Excel for detailed offline analysis.

In engine-only monitoring mode, engine realtime parameters are stored in logfile cvtz50_engine.txt.

Frequently Asked Questions

Q: Does CVTz50 work with UBS variant of ELM32, can it run on iOS or Windows Mobile?
A: No and there are no plans to add their support in the futureQ: What does specific DTC mean? What is the meaning of specific CVT parameter?
A: Most reliable information can be found in Electronic Service manual for specific vehicle which also describe potential causes for major DTCs and corresponding diagnostic and recovery procedures.Q: Why Primary Pressure is always 0 and Step4 test does not show this pressure while other parameters displayed correctly?
A: Some vehicles do not have Primary Pressure sensor so this parameter is always displayed as 0

Where to buy ELM327 Interface

Fastest and most reliable way of getting proper ELM327v1.5 is buying it at local store. Check it immediately with CVTz50 or CVTz50 DEMO and get moneyback if it unable to connect to transmission. Just one disadvantage – price of the interface will be higher comparing to online stores.

It is also possible to buy a good ELM327 interface via Ebay or Aliexpress, search using keywords ELM327 PIC18F25K80 (PIC18F25K80 is name of the chip inside majority of “good” adapters). The problem is that some sellers are still shipping “fake” interfaces regardless of mentioning the name of good chip in item’s description, especially sellers offering lowest price. So before placing an order, it is necessary to check with the seller whether their product really has proper version 1.5 and build on appropriate hardware. Sample query to a seller: Is your ELM327 1.5 built on original Microchip PIC18F25K80? What’s the frequency of crystal oscillator there, 4mhz or 16mhz? Does it support commands ATAL and ATPPS?

Difference between good and bad ELM327 interface

Casing of good and bad interfaces is the same (many variants of cases exist however all of them can have fake components inside) so it is needed to look into internals. Many online stores provide pictures of disassembled devices allowing to recognize obvious fakes (though pictures in online shops are not always real).”Good”, “real version 1.5” ELM327 interfaces are built on chip PIC18F25K80 produced by Microchip. As a rule, such interfaces are properly listed as “version 1.5” in online stores. Android application ELM327 Identifier after analysis of such device show that the interface supports all commands of ELM327 protocol till version 1.4.”Bad” (or fake) interfaces are built on cheap microcontrollers like STM32F042, BK3231Q, 25K80 QBD327 and unknown chips hidden under black drop of special varnish. Such interfaces are usually recognized as “Chineese version 2.1”, however many unfair sellers are selling these as v1.5. Moreover, when connected to diagnostic software, poor interfaces can report version 1.5 so they are “fake v1.5” (actually they can show any number there). If “bad” interface is not trying to trick the user, than ELM327 Identifier will show that many v1.4 commands are not supported. However if fake ELM327 programmed to cheat diagnostic software, ELM327 Identifier can show same result as for good interface or even better.Special attention to new kind of fake adapters introduced in 2017 – built on chip QBD327 relabeled as PIC18F25K80. Such relabeled chips have following specialities:

  • Microchip logotype (M) on fake chip is blurred (while original chip has clear and sharp logo)
  • Third line of the label on fake chip has string 14309MP or 1643URE; original chip has another strings with encoded production date
  • Fake chip uses crystal oscillator with frequency 16.000MHz (usually located near the chip); original PIC18F25K80 requires crystal oscillator 4.000MHz
  • Fake ELM327 does not support command ATPPS; good ELM327 recognizes command ATPPS and responds to it with list of hex numbers (ATPPS can be sent to the adapter using “Custom commands” in CVTz50 DEMO).

Difference in pictures

Good ELM327 interface: microchip PIC18F25K80 and crystal oscillator 4MHz.
Might be built on one PCB (like on the picture), or on two or three PCBs soldered together

Bad ELM327 interface: fake microchip PIC18F25K80 with label 14309MP and crystal oscillator 16MHz

Bad ELM327 interface: microchip STM32
Sometimes such interfaces can work with limitations in mode “ELM327 v2.15 compatibility”

Bad ELM327 interface: unknown chip hidden under drop of varnish

Member Credit: Kelby Mikhal Pickrell

The 2016+ 8thgen Intake Manifold directly fits the 2009-2015 7thgen Maxima. It will also fit other gens (4thgen, 5thgen, 6thgen) that have done the Gen2 VQ35DE (aka HR) engine swap. These can also be used to swap your 2007+ Altima Manifold to a Maxima one (direct fit as well).

You can find and buy these manifolds on eBay for around $150 or less.

Please Note: As of now, there hasn’t been any testing to prove additional gains in comparison to the  2009-2015 7thgen Maxima manifold. We will provide an update as we learn more.