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Supported Vehicles:

  • USDM 2007-2008 Forester XT AT

  • USDM 2007-2008 Forester XT MT



Map Revision

:

  • Stage1 93 MTv300

  • Stage1 91 MTv300
    MapVersion
    Stage1
    ACN91 MTv300
  • Stage2 93 MTv300
  • Stage2 91 MTv300
    v400
    Stage2
    ACN91 MTv300
    • VF43 93 MT300
    • VF43 91 MTv300
    • VF43 ACN91 MT300
    • Stage1 93 ATv300

    • Stage1 91 ATv300

    • Stage1 ACN91 ATv300
    • Stage2 93 ATv300
    • Stage2 91 ATv300
    • Stage2 ACN91 ATv300
    • VF43 93 AT300
    • VF43 91 ATv300
    • VF43 ACN91 AT300
    v400






    Map Availability: 

    Required Accessport Firmware: 

    V2: 1.6.4 or greater 

    • V3: 1.7.34.0-13565 17431 or greater

    Image Removed




    Hardware Requirements: Stage1 - Otherwise stock vehicle with the following modifications*:

    • Intake Requirements: Stock airbox or COBB Tuning SF Intake
    • Exhaust requirements: Stock exhaust or upgraded cat-back exhaust

    Hardware Requirements: Stage2 - Otherwise stock vehicle with the following modifications*:

    • Intake Requirements: Stock airbox or COBB Tuning SF Intake
    • Exhaust requirements: Upgraded catted turbo-back exhaust

    Hardware Requirements: VF43 - Otherwise stock vehicle with the following modifications*:

    • Intake Requirements: Stock airbox or COBB Tuning SF Intake
    • Exhaust requirements: Upgraded catted turbo-back exhaust
    • Turbocharger: IHI VF43 (2004-2006 STi)
    • Intercooler: 2004-2007 STi top-mount intercooler or equivalent
    • Fuel Injectors: Stock fuel injectors
    • Restrictor pill requirement: Stock restrictor pill from TD04 turbocharger

    * The addition of any other hardware may make the vehicle perform poorly.

    ** No other intakes, turbochargers, or fuel injectors are certified as compatible with these maps. **

    Additional Notes:

     

    Additional modifications such as an upgraded panel filter, lightweight crank pulley, aftermarket up-pipe, or recirculating by-pass valve are still within the acceptable modifications for this calibration. If any knock or detonation is present even when using the appropriate fuel, try reflashing a map that is intended for a lower octane fuel. If your modifications do not match the hardware requirements listed above, you can have a custom AccessPORT map made at one of the many professional Subaru Pro-Tuners and e-Tuners.  

    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 94octane fuel or better.
    • Maps designated with "91" are for use with 91 and 92 octane fuel or better.
    • Maps designated with ACN 91 are for use with 91 octane fuel or better fuel found in Arizona, California and Nevada in addition to Canada.

    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" octane version 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. 
     

    If you are unfamiliar with how to datalog using the Accessport or what to look for, you can find a guide on our website here
     

    If any knock or detonation is present even when using the appropriate fuel, try reflashing a map that is intended for a lower octane fuel. 




    Image Modified

    Typical Stage1, Stage2, VF43 vs Stock Power:



    Image Added


    Map

    Peak Gains*

    Stage1 ACN91

    +11% HP / +28% TQ over stock
    Stage1 91+11% HP / +28% TQ over stock
    Stage1 93+13% HP / +28% TQ over stock
    Stage2 ACN91
    +22% HP / +43% TQ over stockStage2 91+22% HP / +43% TQ over stockStage2 93+24% HP / +45% TQ over stockVF43 ACN91 MT+34% HP / +33% TQ over stockVF43 91 MT+36% HP / +45% TQ over stockVF43 93 MT+36% HP / +50% TQ over stockVF43 ACN91 AT+26% HP / +33% TQ over stockVF43 91 AT+36% HP / +45% TQ over stockVF43 93 AT+36% HP / +45% TQ over stock

    Image Removed

    Stock

    Stage1 - - - - +2% HP / +5% TQ over stock

    Stage2 - - - - +10% HP / +17% TQ over stock

    Image Removed

    Stock ----------

    Boost ----------

    Torque ----------

    Power ----------


    *Peak gains are measured as the difference between the highest points of the two plots. 

    *Largest gains are measured as the largest gain at any single point between the two plots. 

    Results may vary. Power as tested on 2006 FXT vehicles 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.

    Map Version Notes: 

    Stage1 Maps

    Stage1 91 v300 Fuel Requirements: 91 - 92 octane or better


    Panel
    borderColorgold

    Stage1

    Intake
    • Intake SUB00001IA
    • Exhaust Requirements: Stock exhaust or upgraded cat-back exhaust
    • Boost Targets:
    ~13
  • Fuel Requirements: 91 - 92 octane or better
  • Intake Requirements: Stock airbox or COBB Tuning SF Intake
  • Exhaust Requirements: Stock exhaust or upgraded cat-back exhaust
  • Boost Targets:

      • ACN91: ~13.0psi peak boost pressure tapering down to ~9.0psi by the 6700RPM redline, +/- 0.7 psi
    Stage1 91 v300
  • Fuel Requirements: 93 - 94 octane or better
  • Intake Requirements: Stock airbox or COBB Tuning SF Intake
  • Exhaust Requirements: Stock exhaust or upgraded cat-back exhaust
  • Boost Targets: ~13
      • 91 Octane 95 RON Minimum: ~13.5psi peak boost pressure tapering down to ~9.0psi by the 6700RPM redline, +/- 0.7 psi
    Stage1 93 v300
      • 93 Octane 98 RON Minimum: ~13.5psi peak boost pressure tapering down to ~9.0psi by the 6700RPM redline, +/- 0.7 psi

    Stage2 Maps

        • Stage1 91 v300
          • Fuel Requirements: 91 - 92 octane or better
          • Intake Requirements: Stock airbox or COBB Tuning SF Intake
          • Exhaust Requirements: Stock exhaust or upgraded cat-back exhaust
          • Boost Targets: ~14.8psi peak boost pressure tapering down to ~10.0psi by the 6700RPM redline, +/- 0.7 psi
        • Stage1 91 v300
          • Fuel Requirements: 91 - 92 octane or better
          • Intake Requirements: Stock airbox or COBB Tuning SF Intake
          • Exhaust Requirements: Stock exhaust or upgraded cat-back exhaust
          • Boost Targets: ~15.2psi peak boost pressure tapering down to ~10.0psi by the 6700RPM redline, +/- 0.7 psi
        • Stage1 93 v300
          • Fuel Requirements: 93 - 94 octane or better
          • Intake Requirements: Stock airbox or COBB Tuning SF Intake
          • Exhaust Requirements: Stock exhaust or upgraded cat-back exhaust
          • Boost Targets: ~15.2psi peak boost pressure tapering down to ~10.0psi by the 6700RPM redline, +/- 0.7 psi

    FXT VF43 Maps (Manual Transmission)

        • FXT VF43 ACN91 MTv300
          • Fuel Requirements: 91 - 92 octane or better
          • Intake Requirements: Stock airbox or COBB Tuning SF Intake
          • Exhaust requirements: Upgraded catted turbo-back exhaust
          • Turbocharger: IHI VF43 (2007 STi)
          • Intercooler: 2004-2007 STi top-mount intercooler or equivalent
          • Fuel Injectors: Stock fuel injectors
          • Boost Targets: ~15.5psi peak boost pressure tapering down to ~12.0psi by the 6700RPM redline, +/- 0.8 psi
        • FXT VF43 91 MTv300
          • Fuel Requirements: 91 - 92 octane or better
          • Intake Requirements: Stock airbox or COBB Tuning SF Intake
          • Exhaust requirements: Upgraded catted turbo-back exhaust
          • Turbocharger: IHI VF43 (2007 STi)
          • Intercooler: 2004-2007 STi top-mount intercooler or equivalent
          • Fuel Injectors: Stock fuel injectors
          • Boost Targets: ~16.0psi peak boost pressure tapering down to ~12.0psi by the 6700RPM redline, +/- 0.8 psi
        • FXT VF43 93 MTv300
          • Fuel Requirements: 93-94 octane or better
          • Intake Requirements: Stock airbox or COBB Tuning SF Intake
          • Exhaust requirements: Upgraded catted turbo-back exhaust
          • Turbocharger: IHI VF43 (2007 STi)
          • Intercooler: 2004-2007 STi top-mount intercooler or equivalent
          • Fuel Injectors: Stock fuel injectors
          • Boost Targets: ~17psi peak boost pressure tapering down to ~12.75psi by the 6700RPM redline, +/- 0.8 psi

    FXT VF43 Maps (Automatic Transmission)

        • FXT VF43 ACN91 ATv300
          • Fuel Requirements: 91 - 92 octane or better
          • Intake Requirements: Stock airbox or COBB Tuning SF Intake
          • Exhaust requirements: Upgraded catted turbo-back exhaust
          • Turbocharger: IHI VF43 (2007 STi)
          • Intercooler: 2004-2007 STi top-mount intercooler or equivalent
          • Fuel Injectors: Stock fuel injectors
          • Boost Targets: ~15.5psi peak boost pressure tapering down to ~12.0psi by the 6700RPM redline, +/- 0.8 psi
        • FXT VF43 91 ATv300
          • Fuel Requirements: 91 - 92 octane or better
          • Intake Requirements: Stock airbox or COBB Tuning SF Intake
          • Exhaust requirements: Upgraded catted turbo-back exhaust
          • Turbocharger: IHI VF43 (2007 STi)
          • Intercooler: 2004-2007 STi top-mount intercooler or equivalent
          • Fuel Injectors: Stock fuel injectors
          • Boost Targets: ~15.5psi peak boost pressure tapering down to ~12.0psi by the 6700RPM redline, +/- 0.8 psi
    FXT VF43 93 ATv300
  • Fuel Requirements: 93-94 octane or better
  • Intake Requirements: Stock airbox or COBB Tuning SF Intake
  • Exhaust requirements: Upgraded catted turbo-back exhaust
  • Turbocharger: IHI VF43 (2007 STi)
  • Intercooler: 2004-2007 STi top-mount intercooler or equivalent
  • Fuel Injectors: Stock fuel injectors
  • Boost Targets: ~16.0psi peak boost pressure tapering down to ~12.0psi by the 6700RPM redline, +/- 0.8 psi


    Info
    iconfalse
    titleC.A.R.B Note

    The above Stage1 calibration is legal for use on Emissions Controlled Vehicles in all 50 states when used in accordance with the manufacturer's application guide because it and the parts have a California Air Resources Board (CARB) Executive Order (EO) number: 





    Non-Performance Maps

    Anti-Theft Mode

    • Will not allow vehicle to start


    Economy Mode

    v300

    • Fuel Requirements: 91 octane or better
    • Intake Requirements: Stock airbox or COBB Tuning SF
    • Intake
    • Intake SUB00001IA
    • Exhaust Requirements:
      • Stock
    • exhaust
      • or upgraded
    • turbo
      • Cat-back
    • exhaust
      • Exhaust
    • Boost Targets: Mechanical minimum (typically around 6psi - 10psi)
    • Rev Limiter: 6700 RPM


    * Not intended for aggressive driving*


    Valet Mode

    v300

    • Fuel Requirements: 91 octane or better
    • Intake Requirements: Stock airbox or COBB Tuning SF
    • Intake
    • Intake SUB00001IA
    • Exhaust Requirements:
      • Stock
    • exhaust
      • or upgraded
    • turbo
      • Cat-back
    • exhaust
      • Exhaust
    • Boost Targets: Mechanical minimum (typically around 6psi - 10psi)
    • Rev Limiter: 3500 RPM





    Monitoring Boost Levels:

    The best way to determine if you are hitting target boost is to watch the TD Boost Error parameter. This parameter is your target boost (including altitude and temperature compensations) minus your actual boost (negative values mean you are over the target by the amount while positive values mean you are under). Ideally you want this value to be between 0 and 1.0 at wide open throttle (WOT), but -1.0 to 1.0 is acceptable assuming that you don’t have any significant knock corrections. Overboosting is more likely to occur in higher gears and with colder outside temperatures, so be sure to verify boost levels during these conditions.




    High Altitude:

    A quick note for those of you that live at higher altitudes. It is common for turbocharged cars at higher altitudes to run less boost pressure due to lower air pressure and air density. Your turbocharger has to work harder to compress a less dense air mass compared to the same turbocharger at sea level. This must be factored in when determining if your turbocharger is running the proper amount of boost pressure and not being pushed beyond its efficiency range. 

    Example: If you live in Denver at 5280 ft and are trying to run a peak boost pressure of 15 psi, your turbocharger has to work the equivalent of making ~17.5 psi at sea level.

    There are barometric compensations within the factory ECU that lower boost targets as you climb in altitude in an effort to keep the turbocharger in its optimal range. The COBB performance maps utilize these compensations and therefore, it is perfectly normal for the final boost target to be lower than what is listed for your map.




    Revision Notes:

    3.00 -
    Version #Notes:
    v400Maps updated to eliminate unnecessary DTC Supression or updated versions for parity with other maps/vehicles within the platform
    v350Maps have been updated to eliminate unnecessary DTC suppression.
    v300Now compatible with Launch Control and Flat-Foot Shifting (LC/FFS) features (MT only). For complete details on how to enable and use the LC/FFS functionality, please visit this FAQ. These maps have been created with the newly-released AccessTUNER Pro 1.9.0.0. Maps created with this version of AccessTUNER software require the latest AccessPORT firmware (version 1.6.4.0-1189 or greater) be installed. All AccessPORTs must first be updated before using maps created with this latest AccessTUNER version. AccessPORT Manager 2.0 will automatically update the AccessPORT to the latest firmware version and is available for download on the COBB Tuning Support web page.
    v110
    1.10 -
    Original Mapping. Tuned AVCS, Boost, Fuel, Ignition, closed loop control, Dynamic Advance, Throttle Duty Cycles, and base programming logic to improve driving quality. Revised Closed Loop management (Base Map Change). Revised Boost Control parameters. Smoothed out boost related values, improved boost response at lower RPMs. Modified high RPM timing and dynamic advance parameters to allow for improved ignition advance learning when using improved octane. Modified Primary Fuel and Primary Ignition tables to account for the effects of AVCS tuning. Further tuned Dynamic Advance table to promote smooth transitional (low RPM to high RPM) acceleration. Raised speed limiter. Moved Speed Limits to 186 mph. Increased boost cut to 17.11psi at sea level. This map has been updated to latest AccessTUNER file format, v1.10.