Supported Vehicles:

•  2008 - 2018 GTR
  
  

Map Revision:

Map Availability: 

• Download maps here. 
  
  
  

Required Accessport Firmware:

• AP-NIS-005/6: 1.6.8.0-10573 or greater

• AP3-NIS-005/6: 1.7.3.0-19649 or greater

• AP3-NIS-007/8: 1.7.3.0-19649 or greater
  
  
  

COBB Custom ECU Features

• COBB Custom Features: COBB Rolling Boost

• COBB Custom Features: GTR Launch Control and COBB Bump Box

Fuel Requirements:

Each map lists the minimum required octane. A higher octane fuel can be used safely on a map designed for lower octane. DO NOT use maps designed for higher octane with lower octane fuels. Top Tier gasoline should be used where available.

• Maps designated with "93" are for use with 93 and 94 octane/98 RON fuel or better.

• Maps designated with "91" are for use with 91 and 92 octane/95 RON fuel or better.

• Maps designated with "ACN91" are for use with 91 octane fuel found in Arizona, California, and Nevada or better.

These maps are designed for E10 fuel (fuel with 10% ethanol content). For those who only have access to E0 fuel (fuel with 0% ethanol) it is recommended to use the "91" and "ACN91" octane versions of the maps and datalog the car to ensure your fuel is performing to the necessary level. This is especially important for those using Canadian 94 octane E0 fuel. 

GTR Power Gains

Stage1, 1+

Stage1 Maps

• Fuel Requirements: 91 octane fuel found in Arizona, California, and Nevada or better

• Intake Requirements: Stock or COBB Tuning SF Intake System (2.75")

• Exhaust Requirements: Stock exhaust, Akrapovič, or similar upgraded cat-back exhaust

• Boost Targets per Map

  • ACN91 Boost Targets: 16.5psi slot 0, 14.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7150 RPM redline, +/- 1.0psi.

  • 91 OCT/ 95 RON Boost Targets: 16.5psi slot 0, 14.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7150 RPM redline, +/- 1.0psi.

  • 93 OCT/ 98 RON Boost Targets: 16.5psi slot 0, 14.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7150 RPM redline, +/- 1.0psi.

• CARB EO: D-660-134

Stage1 + Big SF Maps

• Fuel Requirements: 91 octane fuel found in Arizona, California, and Nevada or better

• Intake Requirements: COBB Tuning Big SF Intake System, or COBB Tuning Redline Intake

• Exhaust Requirements: Stock exhaust, Akrapovič, or similar upgraded cat-back exhaust

• Boost Targets per Map

  • ACN91 Boost Targets: 16.5psi slot 0, 14.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7150 RPM redline, +/- 1.0psi.

  • 91 OCT/ 95 RON Boost Targets: 16.5psi slot 0, 14.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7150 RPM redline, +/- 1.0psi.

  • 93 OCT/ 98 RON Boost Targets: 16.5psi slot 0, 14.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7150 RPM redline, +/- 1.0psi.

• CARB EO: D-660-134

Non-Performance Maps

• Anti-Theft Map

  • Car will not start. Used to prevent theft of vehicle.

Stage1+Flex Fuel

Stage1 + Flex Fuel Maps

• Fuel Requirements: 91 octane fuel found in Arizona, California, and Nevada or better

• Fuel System:

  • Stock Injectors

  • COBB CAN Gateway Flex Kit

  • COBB CAN Gateway Fuel Pressure Sensor

  • COBB upgraded fuel pump kit 3C1450

• Intake Requirements: COBB Tuning Big SF Intake System, or COBB Tuning Redline Intake

• Exhaust Requirements: Stock exhaust, Akrapovič, or similar upgraded cat-back exhaust

• Boost Targets per Map - Due to the small size of the factory injectors, peak boost will gradually decrease as ethanol content increases to ensure safe operation of the vehicle.

  • ACN91 Boost Targets: 16.5psi slot 0, 14.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7150 RPM redline, +/- 1.0psi.

  • 91 OCT/ 95 RON Boost Targets: 16.5psi slot 0, 14.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7150 RPM redline, +/- 1.0psi.

  • 93 OCT/ 98 RON Boost Targets: 16.5psi slot 0, 14.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7150 RPM redline, +/- 1.0psi.

• Power numbers are from 93 octane mapping. Results may vary. Power as tested on 2009 GTR vehicle using these identical calibrations. Generally speaking, the 91 and ACN91 calibrations run slightly lower boost, have a richer fuel curve, and a less aggressive ignition advance map to help compensate for 91 octane fuel; Arizona, California, and Nevada 91 octane fuel; and/or less than ideal atmospheric conditions. The maps designed for 93 octane are the most aggressive. Peak gains are measured as the difference between the highest points of the two plots.
  
  

Feature Descriptions:

Real time Map Switching with Cruise Control Buttons.

• This feature enables users to switch between real-time maps. Once the appropriate v300+ calibration is flashed to the ECU via the Accessport, the end user can use the factory cruise control system to switch between two different maps. The number of available real time maps is adjustable with Accesstuner GT-R software. Custom tuned calibrations can contain up to 9 real-time switchable maps. v300+ maps included with your Accessport or downloaded from the COBB Tuning website contain three maps that are switchable in real-time. Map 0 is the performance map, map 1 is a lower boost setting, and map 2 is valet mode with lower rev limit/boost settings.

Fast Map Flashing

• Fast map flash allows users to switch between maps in 30-40 seconds compared to the full map flash which takes up to 11 minutes (initial install). Fast map flash is dynamically determined by the Accessport during change map operations and is used when applicable.

Heads-Up Display Engine Knock Warning

• Engine knock can be monitored using the factory heads-up-display. Once the knock monitoring system detects knock, the boost gauge will start flashing on the heads up display. This is adjustable through Accesstuner software. These maps provide the ability to monitor knock through the factory display. Once the knock monitoring system detects knock retard above ~2.5 degrees, the boost gauge will start flashing on the display. Indications of knock must not be ignored. Excessive knock will damage the engine. V500 maps introduced new logic for CBA and DBA ECUs which caused the boost gauge to flash constantly when the ECU enters high detonation mode (which can happen with excessive knock). The flashing rate is faster than the normal knock flash rate and further knock events will not be shown on boost gauge in high det. mode (just a constant fast flash of gauge). When ECU exits high det. mode (requires a key cycle), normal reporting of knock events will resume on gauge (until high det mode is activated again). Note: The high det. mode fast flash is a little too fast for the gauge at times and some may notice a very slight pause in the flashing at times (this is normal). 

Boost Gauge Wrap-Around

• Multi. Function Display (M.F.D.) boost gauge now wraps around and displays boost in excess of 20 PSI (~150kPa). Available feature in v500+ map calibrations. 

User Adjustable Launch Control (LC)

• User adjustable Launch RPM via the Accessport "Tune" menu. Launch RPM can be adjusted in increments of 100 rpm. Available feature in v600+ map calibrations.

Engine Safety Features

• Engine safety features are enabled on all performance v701+ map revisions. The COBB engine safeties look at coolant temperature, knock, oil temperature, shot term fuel trims (STFT), and put the car into a soft limp mode if any of these engine parameters go outside of a safe operating range. The safety will reset when the throttle pedal returns to below 20%. You can also view what parameter was tripped by logging the monitor - limp status (safety).