Map Notes for GT-R

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







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. 




Tuned Power vs. Stock Power:


Peak Gains

Maximum Gains

Stage1 93

Stage2 93

Stage3 93

+3.16% HP / +11.17% TQ

+19.52% HP / +30.02% TQ

+23.67% HP / +33.93% TQ

+17.99% HP / +17.99% TQ

+38.78% HP / +39.39% TQ

+44.02% HP / +44.02% TQ

Stock
Stage 1
Stage 2  
Stage 3


  • 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.
  • Maximum gains are measured as the largest gain at any single point between the two plots.




Hardware and Typical Boost Pressure: 

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
  • 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.



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



Stage2 Maps

  • Fuel Requirements: 91 octane fuel found in Arizona, California, and Nevada or better
  • Intake Requirements: COBB Tuning Big SF Intake System
  • Exhaust Requirements: COBB Tuning Catted Y-Pipe, Stock exhaust, Akrapovič, or similar upgraded cat-back exhaust
  • ACN91 Boost Targets: 18.0psi slot 0, 15.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7300 RPM redline, +/- 1.0psi.
  • 91 OCT/ 95 RON Boost Targets: 18.0psi slot 0, 15.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7300 RPM redline, +/- 1.0psi.
  • 93 OCT/ 98 RON Boost Targets: 18.0psi slot 0, 15.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7300 RPM redline, +/- 1.0psi.


Stage3 1300x2 Maps

  • Fuel Requirements: 91 octane found in Arizona, California, and Nevada or better
  • Intake Requirements: COBB Tuning Big SF Intake System
  • Exhaust Requirements:COBB Tuning Catted Y-PipeAkrapovič or similar upgraded cat-back exhaust
  • Fuel System Requirements: COBB 1300x2 Injectors, upgraded fuel pump
  • Intercooler Requirements: Alpha Performance front mount intercooler or similar high performance intercooler
  • ACN91 Boost Targets: 19.0psi slot 0, 17.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7300 RPM redline, +/- 1.0psi.
  • 91 OCT/ 95 RON Boost Targets: 19.0psi slot 0, 17.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7300 RPM redline, +/- 1.0psi.
  • 93 OCT/ 98 RON Boost Targets: 19.0psi slot 0, 17.0psi slot 1, valet mode slot 2 (wastegate spring pressure) peak boost pressure tapering down as you approach the 7300 RPM redline, +/- 1.0psi.



Non-Performance Maps

  • Anti-Theft Map
    • Car will not start. Used to prevent theft of vehicle.




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). 




Revision Notes for CBA GTR: 

v800

  • Maps have been updated to eliminate unnecessary DTC suppression.

v710

  • Stage 3 1300x2 maps that offer compatibility with the newest 1300x2 injectors

v705

  • Stage3 1300x maps take advantage of new COBB custom boost cut, barometric and Intake air temp. wastegate compensation features. Updated MAF calibration, injector scaling, AF targets, clutch torque.

v703

  • Stage 3 maps now include 1300x injectors due to discontinuation of ID1000 injectors.
  • Old Stage 3 maps have been renamed with ID1000 in the title and new Stage 3 maps include 1300x in the title.  

v702

  • Updated knock sensitivity tables (back to stock values, previously using 2012 strategy which was more sensitive) on pertinent  2016+ USDM vehicles (2015+ World Market).
  • All other maps not requiring knock sensitivity table adjustment had version numbers uprevved for parity. 

v701

  • Updated tuning strategy with leaner AFR target, higher boost settings, modified ignition/cam timing
  • Added engine safety features to all v701+ maps
  • Modified order of maps located in OTS maps slots (map 0 is now performance)

v600

  • Updated all non High Performance maps to v600 to support user adjustable LC

v500

  • Aded 2010 JDM Vspec GTR support
  • JDM: Raised cruiser control limiter
  • CBA: Enabled boost gauge wrap around
  • Revised long description in Stage0 maps for clarity

v361

  • BETA HP maps: raised LC limiter to 4100 RPM (unless already set to 4500 RPM for certain regions GTR's)

v360

  • BETA High Performance (HP) maps and BETA HP Big SF intake maps released

v301/302

  • Real-time map switching with cruise control
  • Fast map flashing
  • Heads-up knock display for CBA GTR's
  • Big SF intake map support




Revision Notes for DBA GTR: 

v800

  • Maps have been updated to eliminate unnecessary DTC suppression.

v705

  • Stage3 1300x maps take advantage of new COBB custom boost cut, barometric and Intake air temp. wastegate compensation features. Updated MAF calibration, injector scaling, AF targets, clutch torque.

v703

  • Stage 3 maps now include 1300x injectors due to discontinuation of ID1000 injectors.
  • Old Stage 3 maps have been renamed with ID1000 in the title and new Stage 3 maps include 1300x in the title.
  • Stage 2 maps updated for quality of life improvements.

v702

  • Updated knock sensitivity tables (back to stock values, previously using 2012 strategy which was more sensitive) on pertinent 2017 USDM vehicles (2016 World Market).
  • All other maps not requiring knock sensitivity table adjustment had version numbers uprevved for parity. 

v701

  • Updated tuning strategy with leaner AFR target, higher boost settings, modified ignition/cam timing
  • Added engine safety features to all v701+ maps
  • Modified order of maps located in OTS maps slots (map 0 is now performance)
  • 2009 USDM GT-R: Added TSB ROM Support (Nissan GT-R ROM TSB Info)

v600

  • Updated to v600 to support user adjustable LC (not available for AP3-NIS-007)
  • Added MY14 vehicle support
  • Stage3 - E85, updated cranking enrichment to help with cold weather start-up

v501

  • DBA GTR knock flash threshold fixed for EDM, JDM, and SADM vehicles

v500

  • Added 2013 South Africa GTR support
  • DBA: Enabled knock flashing
  • DBA: Enabled boost gauge wrap around
  • JDM: Raised cruise control limiter

v404

  • Original relase of DBA GTR maps (DBA ignition strategy)