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  • APR ECU UPGRADE - 4.0L GT3 RS (991.2)
  • APR ECU UPGRADE - 4.0L GT3 RS (991.2)
  • APR ECU UPGRADE - 4.0L GT3 RS (991.2)

    APR ECU UPGRADE - 4.0L GT3 RS (991.2)

    APR

    MSRP:
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    SKU:
    ECU-40L-9912-GT3RS

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    Product Description

    We're excited to announce our Engine Control Unit (ECU) Upgrades are now available for the Porsche 911 GT3 RS (991.2) 4.0L engine with the Bosch MED17.x ECU! Expect excellent gains with up to 539-577 HP with 362-380 FT-LBS of torque on tap, depending on octane, from this simple software upgrade. Our new suite of 4.0L ECU software comes after months of extensive research and development that is typically absent from the aftermarket. Our upgrade makes the engine more powerful and more exciting with added features. We've extensively calibrated the system to work flawlessly on the track, while retaining safety routines to protect your engine in the most demanding scenarios.

    Features:

    • Delivers up to 539-577 HP with 362-380 FT-LBS depending on octane
    • Max gains of +33-77 WHP and +39-58 WFT-LBS depending on octane
    • Supports 91 AKI, 93 AKI, 100 AKI, 104 AKI, and E60-E85 fuel grades
    • Ethanol support from E60-E85 for maximum performance
    • Standing RPM limiter set to 7,000 RPM
    • Engine RPM limiter set to 9,000 RPM
    • Speed limiter matches max gearing
    • Exhaust flaps recalibrated to provide better low-end performance
    • No hardware required (Software only)
    • Supports standard bolt on modifications
    • Free lifetime updates
    • Direct OBDII port flash (No ECU removal)
    • 30 day money back guarantee

    Vehicle Fitment Guide

    2019 Porsche 911 GT3 RS (4.0L H6)

     

    40l_9912_911_gt3rs_s0_vs_s1_e85_c.png
    Porsche Rear Engine Dyno Testing Notes - This engine is extremely sensitive to intake air temperature (IAT) due to the rear engine and rear cooling design. Power figures on a stationary dyno will vary wildly with limited airflow compared to real world conditions. As IAT increases the calibration will intentionally reduce power to protect the engine.

    APR CALIBRATION REPORT

    STAGE HP TQ MAX GAIN MAX GAIN
    Stock As Reported by Porsche  520 PS  346 FT-LBS    
    Stock As Measured by APR 522 HP 350 FT-LBS    
    STAGE 1        
    91 AKI / 95 RON 539 HP 362 FT-LBS +33 HP +39 FT-LBS
    93 AKI / 98 RON 547 HP 366 FT-LBS +44 HP +43 FT-LBS
    100 AKI / 104 RON 558 HP 368 FT-LBS +57 HP +45 FT-LBS
    104 AKI / 108 RON 561 HP 370 FT-LBS +61 HP +47 FT-LBS
    E60-E85 577  HP 380  FT-LBS +77  HP +58  FT-LBS
    Only use fuel equal to or higher than specified. Never use a lower octane fuel. Always follow our fuel guide, especially with race fuel and Ethanol, where available. Dynos are for reference only. Results will vary. Contributing factors include the vehicle condition, vehicle setup, dyno type, dyno setup, environmental factors, fuel quality, and more. When describing fuels, the North American Region (NAR) uses the Anti-Knock Index (AKI), (RON+MON)/2, or (R+M)/2. The Rest of the World (ROW) uses RON. RON is Research Octane Number and MON is Motor Octane Number.

     

    PRODUCT NOTE:
    THIS IS NOT A PHYSICAL ECU, THIS IS SOFTWARE ONLY!

    All APR Software upgrades are only available at our Joplin, Missouri retail location. In order to receive an APR software upgrade, please click here to schedule an appointment. You may either add this item to your cart and purchase online, or may also pay in store. 

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    APR ECU UPGRADE - 4.0L GT3 RS (991.2)
    APR
    APR ECU UPGRADE - 4.0L GT3 RS (991.2)

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