APR ECU Upgrade - 4.0T EA825 V8 (9Y) — Porsche Cayenne GTS/Cayenne GTS Coupe (2021–2023)
Vendor:
APR
SKU:
ECU-40T-EA825-9Y-GTS
Availability:
In-store installation only
Product type:
Engine Tuning
$1,358.95
APR Stage 1 horsepower gains
APR’s Stage 1 pump-gas figures are shown below. Choose the row for your fuel grade and exact engine version.
| Calibration / version | Required fuel (U.S. octane) | APR total output | APR maximum horsepower gain |
|---|---|---|---|
| Stage 1 | 91 AKI | 685 HP | +229 HP |
| Stage 1 | 93 AKI | 710 HP | +285 HP |
APR describes the gains for this tune as wheel-horsepower gains. Total output and maximum gain are separate figures; maximum gain is not the difference between the two peak horsepower ratings.
Results vary with fuel quality, vehicle condition, hardware and test conditions. Use the fuel required by the installed APR calibration; verify the exact ECU application before installation.
Vehicle fitment
Find your vehicle below, then match the engine, chassis, trim and controller requirements for this specific APR tune. Vehicle names in the title are a summary; compatibility is limited to the applications and conditions shown here.
| Vehicle | Years | Chassis | Engine | Configuration / market | Requirements |
|---|---|---|---|---|---|
| Porsche Cayenne | 2021–2023 | 9YA | EA825 / EA825 4.0L | GTS; SUV · Confirm original market | See fitment requirements below. |
| Porsche Cayenne | 2021–2023 | 9YA | EA825 / EA825 4.0L | GTS Coupe; SUV · Confirm original market | See fitment requirements below. |
Fitment requirements
- Confirm exact ECU/TCU box code, software revision, fuel grade and required hardware with APR before installation. A vehicle/engine match alone does not confirm software availability.
Install Methods
Note: You'll purchase the tune during the install.
We're excited to announce our Engine Control Unit (ECU) Upgrades are now available for the Porsche Cayenne GTS and Cayenne GTS Coupe (9Y) 4.0T 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 +229-324 AWHP and +265-343 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
- Free lifetime updates
- Direct OBDII port flash (No ECU removal)
- 30 day money back guarantee