APR

APR ECU Upgrade - 3.8T Turbo (991.2)

Fits 2017-2019 Porsche 911

Part # ECU-38T-9912 Be the first to write a review

APR ECU Upgrade - 3.8T Turbo (991.2)

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$1,999.95
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7

Emissions

This part is legal under the provisions of EPAโ€™s Tampering Policy dated November 23rd, 2020.

See Emissions Details
APR's ECU Upgrades are the best dollar-per-horsepower modification one can make to improve engine performance. The upgrades dramatically increase horsepower and torque, making for an exceptionally quicker and more exciting vehicle. This is made possible through APR's optimization of the factory engine management system to take full advantage of the engine's capabilities, without needing any end user adjustment. The ECU Upgrades are available with various features and supported octane levels and each stage is compatible with most typical bolt-on modifications. The software is installed to the vehicle's factory ECU through the OBD-II port, resulting in a clean and headache-free install. Furthermore, for those looking for tuning with a limited powertrain warranty, APR Plus has you covered!

Features:

  • Delivers up to 612 HP with 623 FT-LBS of torque (APR Plus)
  • Delivers up to 612-688 HP with 623-679 FT-LBS of torque (APR Stage 1)
  • Delivers up to 654-754 HP with 627-701 FT-LBS of torque (APR Stage 3)
  • Max gains of +98 AWHP with +107 AWFT-LBS of torque (APR Plus)
  • Max gains of +98-165 AWHP with +107-165 AWFT-LBS of torque (APR Stage 1)
  • Max gains of +122-213 AWHP with +121-188 AWFT-LBS of torque (APR Stage 3)
  • Supports 91 AKI, 93 AKI, 100 AKI, 104 AKI, and E60-E85 fuel grades
  • Ethanol and race fuel support for maximum power on the race track
  • Optional factory term limit matching limited powertrain warranty with APR Plus
  • Multiple stages of performance offered
  • Switchable power levels through Porsche‚Äôs Normal, Sport, and Sport+ profiles
  • Linear throttle mapping
  • Standing RPM soft limiter increased
  • Left-foot braking / brake boosting added
  • Optimized thermal management with various engine safety protection routines added
  • Auto Start/Stop defaults to the off position
  • Enhanced power delivery and drivability through recalibrated exhaust flap actuation
  • Speed limiter removed
  • No hardware required for APR Plus or Stage 1 (Software only)
  • Supports standard bolt on modifications
  • Supports Turbo S Turbochargers (Stage 3)
  • Flash counter does not increase with each flash
  • Free lifetime updates
  • Direct OBDII port flash (No ECU removal)
  • 30 day money back guarantee
Brand APR
Emission Code7
Engine AspirationTurbocharged
Engine ConfigurationH6
Engine Displacement3.8L
Engine FamilyPorsche 9A1
Engine OrientationLongitudinal
Fuel TypeGasoline
MarketNAR
ROW
Product TypeECU Upgrade
Part NumberECU-38T-9912
7

This part is legal under the provisions of EPAโ€™s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.
Important fuel quality information
Important fuel quality information
Find your boxcode and revision
Find your boxcode and revision
APR Plus Warranty Booklet
APR Plus Warranty Booklet
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.

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    Porsche Tech Talk

    Driving Modes, Features, and Safety

    Driving Modes - Each upgrade offers a host of improvements beyond power alone. Using Porscheโ€™s Normal, Sport, and Sport Plus modes offers varying levels of output while retaining all of the unique characteristics present in each mode. Sport and Sport plus modes give you full power and torque. Normal mode give you modest increase over stock, but focuses on economy and comfort. Weโ€™ve optimized boost, fueling, ignition, cams, and more to achieve greater power and torque in all scenarios.


    Features - In Sport Plus mode weโ€™ve reduced turbo lag during reapplication of the throttle by building boost while off the throttle. We have linearized the pedal maps for a more predictable throttle response curve, which works exceptionally well on the track. Weโ€™ve enabled left foot braking, and brake boosting. The speed limiter has been removed. Weโ€™ve optimized the software to better handle larger wheels without excessive torque interventions. And finally weโ€™ve inverted the start stop functionality so the vehicle starts with this feature disabled.


    Safety - With many customers tracking their Porsche, safety is paramount in our calibration strategy. Through the use of extreme datalogging equipment and additional sensors, thermocouples, and transducers, our engineers were able to fully optimize the ECU for advanced safety routines. This includes implementing several routines not enabled from the factory. The entire thermal management system is optimized to reduce engine bay temperature, and reduce intake air temperature, while also implementing advanced protection routines to prevent oil temperature from achieving unsafe levels. The exhaust crackles disable when temperature thresholds are crossed, and are only enabled in sport mode. Next, we help protect the engine from LSPI by preventing the engine from being lugged out in tall gears. We also protect the turbo from damaging compressor surge, and add in turboshaft overspeed protection. Weโ€™ve enabled new temperature protection routines to prevent the engine, exhaust, and other components from overheating, and have implemented temperature management strategies that are fully mindful of the platformโ€™s limited fueling capabilities. Weโ€™ve optimized the injection strategy to not only deliver a fatter torque curve and better spool, but to reduce the chances of knock, and torque dips. This is also achieved alongside per cylinder ignition advance and fuel trimming.

    APR ECU Upgrade Stages

    Our ECU Upgrades are available in multiple configurations. Installation of additional performance hardware, such as an intercooler or intake systems, may provide further performance improvements.

    APR Stage 1

    The APR Stage 1 ECU Upgrade is the first step towards tuning your engine. It produces up to 612-688 HP and 623-679 FT-LBS of torque with gains as high as +98-165 HP and +107-165 FT-LBS of torque at the wheels.


    APR Stage 1 is available for 91 AKI, 93 AKI, 100 AKI, 104 AKI, and E60-E85 fuel grades in North America, and 95 RON, 98 RON, 104 RON, 108 RON, and E60-E85 in the Rest of the World.

    APR Plus

    APR Plus is our APR Stage 1 ECU Upgrade with our limited powertrain warranty and itโ€™s the first step towards tuning your engine. It produces up to 612 HP and 623 FT-LBS of torque with gains as high as +98 HP and +107 FT-LBS of torque at the wheels. Please check our warranty manual to understand modifications supported by APR Plus.

    Stage 3 (Turbo S Turbos)

    The APR Stage 3 ECU Upgrade is the next step towards tuning your engine. It produces up to 654-754 HP and 627-701 FT-LBS of torque with gains as high as +122-213 HP and +121-188 FT-LBS of torque at the wheels. Use this tune with the Porsche 991.2 911 Turbo S turbochargers.


    APR Stage 3 with Turbo S Turbos is available for 91 AKI, 93 AKI, 100 AKI, 104 AKI, E60-E85 fuel grades in North America, and 95 RON, 98 RON, 104 RON, 108 RON, E60-E85 in the Rest of the World.

    Horsepower and Torque Dyno Charts

    Select a DynoSelect a Dyno Type
    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

    StageHPTQMax GainMax Gain
    Stock As Reported by Porsche 540 HP 523 FT-LBS
    Stock As Measured by APR 552 HP 541 FT-LBS
    APR Plus (Sport/Sport+)
    91 AKI612 HP 623 FT-LBS +98 HP +107 FT-LBS
    Stage 1 (Sport/Sport+)
    91 AKI / 95 RON612 HP 623 FT-LBS +98 HP +107 FT-LBS
    93 AKI / 98 RON637 HP 671 FT-LBS +135 HP+148 FT-LBS
    100 AKI / 104 RON655 HP 671 FT-LBS +138 HP +148 FT-LBS
    104 AKI / 108 RON661 HP 672 FT-LBS +142 HP +150 FT-LBS
    E60-E85688 HP 679 FT-LBS +165 HP +165 FT-LBS
    Stage 3 w/ Turbo S Turbos (Sport/Sport+)
    91 AKI / 95 RON654 HP 627 FT-LBS +122 HP +121 FT-LBS
    93 AKI / 98 RON685 HP 665 FT-LBS +151 HP +149 FT-LBS
    100 AKI / 104 RON709 HP 669 FT-LBS +172 HP +166 FT-LBS
    104 AKI / 108 RON715 HP 674 FT-LBS +178 HP +171 FT-LBS
    E60-E85754 HP 701 FT-LBS +213 HP +188 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.

    The APR Difference

    Who we are - Weโ€™re a global automotive engineering firm nestled in Opelika, Alabama. Our 80,000ftยฒ state-of-the-art facility is home to some of the best engineers in the industry, who have mastered hundreds of engine management systems. We have multiple engine and chassis dynos, and the resources necessary to create our ECU Upgrades in-house, from the ground up! We're not a new company either. We've been around since the 90's and we have a strong financial backing to ensure we'll be here to support you for decades to come!


    What we do - We optimize everything to make your engine more powerful. We adjust air-fuel ratios, advance ignition, increase boost pressure, alter cam positions and lift profiles, and more, all depending on the type of engine and management system, of course! We donโ€™t take shortcuts, and we donโ€™t take risks. We do it the right way.


    How we differ - With our proprietary calibration and direct ram access data logging tools and operating system code changes, weโ€™re able to make some of the strongest and fastest ECU upgrades, without needing costly end user adjustments. We work with the ECUs intelligent modeling and closed-loop systems, and beta test in multiple environments to create upgrades that work no matter where you drive!

    APR Software Pricing Guide

    Our performance software upgrade is available in multiple stages with optional features.

    APR Plus (USA/Canada)
    APR Plus ECU Upgrade$3,999.95
    APR Stage 1
    APR Stage 1 ECU Upgrade$1,999.95
    APR Stage 1 ECU Upgrade from APR PlusFREE
    APR Stage 3 with Turbo S Turbos
    APR Stage 3 ECU Upgrade$2,999.95
    APR Stage 3 ECU Upgrade from APR Plus or Stage 1$999.95

    Purchasing, Guarantee, and Updates

    Purchasing Optionsยน: Locate an APR Dealer. They will physically install software on your vehicle at their location. Alternatively with the APR Remote Tuning Service (RTS) you'll purchase an APR Tuning Cable and we, or a participating dealer, will remotely install software on your vehicleโ€ .


    Money-Back Guarantee: Try our Software Upgrades for up to 30 days, risk free! If you are not satisfied, have it removed and refunded.ยฒ


    Free Updates: If we make an update, add a standard feature, or if the manufacturer issues an update, you are entitled to a free update.ยณ


    1. Availability: APR Software may not be available for all vehicles. Stages, programs, and features may not be available for all ECUs.
    2. Money Back Guarantee: Excludes some Software Upgrades, such as those included with a hardware purchase. Labor charges are at the discretion of the installer.
    3. Free updates: Subject to availability. Labor charges are at the discretion of the installer. Applicable to the original purchaser. Second hand owners may inquire with an APR Dealer about a software license transfer fee.
    โ€ . Remote flashing: Excludes APR Plus. Excludes some platforms. Dealer participation will vary. Visit our product page for details.
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