APR

APR ECU Upgrade - 4.0T EA825 V8 (9Y) (Cayenne Turbo)

Fits 2019-2023 Porsche Cayenne

Part # ECU-40T-EA825-9Y-TURBO Be the first to write a review

APR ECU Upgrade - 4.0T EA825 V8 (9Y) (Cayenne Turbo)

Free Shipping*
Suggested Retail
$999.95
Find a Dealer
Starting at $88 a month with Learn More
We're excited to announce our Engine Control Unit (ECU) Upgrades are now available for the Cayenne Turbo 4.0T V8 engine with the Bosch MG1 ECU! Expect massive gains with up to 685-767 HP and 731-804 FT-LBS of torque on tap, depending on octane, from this simple software upgrade. 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 once the ECU is unlocked, 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 685-767 HP with 731-804 FT-LBS depending on octane
  • Max gains of +147-236 AWHP and +141-236 AWFT-LBS depending on octane
  • Supports 91 AKI, 93 AKI, 100 AKI, and 104 AKI fuel grades in North America and 95 RON, 98 RON, 104 RON, and 108 RON in the rest of the world
  • Optional factory term limit matching limited powertrain warranty with APR Plus
  • Speed limiter removed
  • Standing RPM soft limiter increased
  • Left-foot braking / brake boosting added
  • Properly rescaled performance gauges
  • Optimized thermal management and protection
  • Optimized launch control strategy for faster response
  • Optimized driveline protection during launch
  • No hardware required (Software only)
  • Supports standard bolt on modifications
  • Eliminated the need for a TCU upgrade to achieve full torque
  • 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
Engine AspirationTurbocharged
Engine ConfigurationV8
Engine Displacement4.0L
Engine FamilyEA825
Engine OrientationLongitudinal
Fuel TypeGasoline
MarketNAR
ROW
Product TypeECU Upgrade
Part NumberECU-40T-EA825-9Y-TURBO
Important fuel quality information
Important fuel quality information
Find your boxcode and revision
Find your boxcode and revision
ECU Order Form
Select VW/Audi MG1 under unlock type
APR Plus Warranty Booklet
APR Plus Warranty Booklet
Please note: Some vehicles may require a torque limited file on the factory transmission with factory transmission software. 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.

Have a question about this product?

  • Question

    Please confirm compatibility with my vehicle: 2019 Porsche Cayenne Turbo

    By Chet Van Doren on March 21, 2023

    Answer
    Yes!
    Helpful?
Load More

APR ECU Upgrade Stages

Our new suite of MG1 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. 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. This was all made possible by our engineering team's pursuit of perfection. Development vehicles were outfitted with additional sensors, including turbo shaft speed sensors, thermocouples, transducers, and more, along with our high speed direct RAM logging equipment, to feed valuable data to the team for analysis. After thousands of hours of testing and tuning we created new calibrations that are fine tuned for several octanes and contain hundreds of map changes, with a vast array of safety features built in.


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 685-767 HP and 731-804 FT-LBS of torque with gains as high as +147-236 HP and +141-236 FT-LBS of torque at the wheels. Some vehicles may require a torque limited file on the factory transmission with factory transmission software.


APR Stage 1 is available for 91 AKI, 93 AKI, 100 AKI and 104 AKI in North America and 95 RON, 98 RON, 104 RON, and 108 RON in the rest of the world.

APR Plus

APR Plus is our APR Stage 1 ECU Upgrade with our limited powertrain warranty and it’s the first step towards tuning your engine. It produces up to 685 HP and 731 FT-LBS of torque with gains as high as +147 HP and +141 FT-LBS of torque at the wheels. Please check our warranty manual to understand modifications supported by APR Plus. Some vehicles may require a torque limited file on the factory transmission with factory transmission software.

Horsepower and Torque Dyno Charts

Select a DynoSelect a Dyno Type

APR Calibration Report

StageHPTQMax GainMax Gain
Stock As Reported by Porsche 541  HP 567  FT-LBS
Stock As Measured by APR 547  HP 591 FT-LBS
APR Plus
91 AKI / 95 RON685 HP 731 FT-LBS +147  HP +141  FT-LBS
Stage 1
91 AKI / 95 RON685 HP 731 FT-LBS +147 HP +141  FT-LBS
93 AKI / 98 RON710 HP 751 FT-LBS +175  HP +169  FT-LBS
100 AKI / 104 RON752 HP 786 FT-LBS +219  HP +216  FT-LBS
104 AKI / 108 RON767 HP 804 FT-LBS +236  HP +236  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 - We’re a global automotive engineering firm nestled in Opelika, Alabama. Our 80,000ft² 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 don’t take shortcuts, and we don’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, we’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 Stage 1 ECU Upgrade$3,999.95
APR Stage 1
APR Stage 1 ECU Upgrade$999.95
APR Stage 1 ECU Upgrade from APR PlusFREE

Purchasing, Guarantee, and Updates

Purchasing Options¹: 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 vehicle†.


Money-Back Guarantee: Try our Software Upgrades for up to 30 days, risk free! If you are not satisfied, have it removed and refunded.²


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.³


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.
†. Remote flashing: Excludes APR Plus. Excludes some platforms. Dealer participation will vary. Visit our product page for details.
Reviews

    Your Review

    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.