APR ECU Upgrade - 4.0T EA824 V8 (S8)

Unlock hidden horsepower and torque with our performance tuning software for your vehicle's Engine Control Unit (ECU).

PART# ECU-40T-EA824-S8

Overview

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:

  • Horsepower - More horsepower throughout the whole rpm band
  • Torque - More torque throughout the whole rpm band
  • Warranty - APR Plus is available, providing a factory term limit matching limited powertrain warranty
  • Program Switching - Change programs and access features with your cruise control stalk
  • APR Mobile - Change programs and access features with your smart device
  • Valet Mode – Neuters the vehicle, giving the driver minimal output
  • Anti-Theft – Password protects driving the vehicle
  • Security Lockout – Password protects program switching
  • Fault Code Erase – Resets ECU fault codes and adaption on the fly
  • COD Delete – Optionally disable Cylinder On Demand to keep the engine running smoothly in full cylinder mode all the time
  • Fuel Grades - Multiple octanes from which to choose
  • Acceleration - Accelerate faster with more power and reduced throttle lag
  • Brake Boosting - Left foot braking or brake boosting added
  • Speed Limiter - Go as fast as you want with the speed limiter out of the way
  • Economy - While cruising, or driving normally, your fuel economy may benefit from our optimized calibration
  • Motorsport Limiter - With the soft limiter removed, you’ll get full power right up to the hard, “bap bap bap” redline fuel cut
  • Direct Port Programming - Clean and easy install through the OBD II port without removing the ECU
  • Free Updates - Get free updates for life
  • Guarantee - 30 day money back guarantee

Specs

BrandAPR
Engine AspirationTurbocharged
Engine ConfigurationV8
Engine Displacement4.0L
Engine FamilyEA824 4.0T
Engine OrientationLongitudinal
Fuel TypeGasoline
MarketNAR
ROW
Product TypeECU Upgrade
Part NumberECU-40T-EA824-S8

APR ECU Upgrade Stages

APR’s ECU Upgrades are available in multiple octanes levels. Each stage is fully compatible with an upgraded intake, catback exhaust, or other minor bolt on modifications.

APR Plus

The APR Plus ECU Upgrade includes a factory term limit matching limited powertrain warranty, and is the first step towards making more power! This simple upgrade requires no engine hardware modifications and produces 646 HP with 656 FT-LBS of torque. To get more power, the vehicle can be outfitted with an upgraded intake, cooler, catback exhaust, and various other bolt-on modifications all without requiring any new modifications to the ECU.


APR Plus is available for 91 AKI and is only available in the USA.

APR Stage 1

The APR Stage 1 ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications and produces 646-692 HP with 656-713 FT-LBS of torque. To get more power, the vehicle can be outfitted with an upgraded intake, cooler, catback exhaust, and various other bolt-on modifications all without requiring any new modifications to the ECU.


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

APR Stage 2

The APR Stage 2 ECU Upgrade is the next step towards making more power! This simple upgrade requires an exhaust system and no other engine hardware modifications and produces 672-710 HP with 691-751 FT-LBS of torque. To get more power, the vehicle can be outfitted with an upgraded intake, cooler, and various other bolt-on modifications all without requiring any new modifications to the ECU.


APR Stage 2 is available for 91 AKI, 93 AKI, 100 AKI, and 104 AKI in North America, and 95 RON, 98 RON, 104 AKI, and 108 AKI in the Rest of the World.

Horsepower and Torque Dyno Charts

Select a DynoSelect a Dyno Type
40tfsi_d4_s8_s0_vs_s1_91_cc.png

APR Calibration Report

StageHPTQMax GainMax Gain
Stock As Reported by VAG 520 PS 481 FT-LBS
Stock As Measured by APR 577 HP 556 FT-LBS
APR Plus
91 AKI646 HP 656 FT-LBS +121 HP +134 FT-LBS
Stage 1
91 AKI / 95 RON646 HP 656 FT-LBS +121 HP +134 FT-LBS
93 AKI / 95 RON667 HP 697 FT-LBS +146 HP +174 FT-LBS
100 AKI / 104 RON692 HP 713 FT-LBS +171 HP +191 FT-LBS
Stage 2
91 AKI / 95 RON672 HP 691 FT-LBS +147 HP +168 FT-LBS
93 AKI / 95 RON688 HP 727 FT-LBS +173 HP +204 FT-LBS
100 AKI / 104 RON710 HP 751 FT-LBS+199 HP +228 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.

Acceleration Testing

Dyno testing is a great way to gauge power increases over the entire rev range but may not translate to real world performance. Through GPS based acceleration testing, APR’s Engineers were able to verify increases made on the dyno translated to a faster and quicker vehicle on the street.

Stage0-60
MPH
0-62
MPH
0-100
KPH
0-100
MPH
60-120
MPH
62-124
MPH
100-200
KPH
60-130
MPH
30-130
MPH
1/4m
60 FT
1/4m
ET
1/4m
MPH
Stock3.759 3.950 3.963 8.723 8.794 9.667 9.729 11.473 13.594 1.837 11.909 116.76
APR STG 1 93 AKI3.387 3.5423.5527.489 7.257 7.841 7.882 9.27110.978 1.769 11.174 123.01
APR STG 1 100 AKI3.212 3.362 3.373 7.033 6.626 7.300 7.344 8.777 10.423 1.74810.937 126.31

Program switching allows you to access additional program modes and features from your cruise control stalk or your smart device with APR Mobile. Depending on the ECU, available memory, and selected options, up to four program modes and all features, can be installed.


  • Stock Mode - Go back to the stock power levels.
  • Performance Modes - Switch between octanes and program modes.
  • Valet Mode - Neuters the vehicle, giving the driver minimal output.
  • Security Lockout - Password protects program switching.
  • Anti-Theft - Password protects driving the vehicle.
  • Fault Code Erase - Resets ECU fault codes and adaptation.

APR Mobile

APR Mobile installs on smartphones, tables and other devices, and connects wirelessly to your ECU. The app can then be used to access features such as program switching, fault code reading and resetting, and high speed data logging.

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
APR Plus ECU Upgrade$2,999.99
APR Stage 1
APR Stage 1 ECU Upgrade$1,999.99
APR Stage 1 ECU Upgrade from APR PlusFREE
APR Stage 2
APR Stage 2 ECU UpgradeDISCONTINUED
APR Stage 2 ECU Upgrade from APR Plus or Stage 1DISCONTINUED
Optional Features
Program SwitchingFREE

Purchasing, Guarantee, and Updates

How to Purchase - APR Software Upgrades are only available through Authorized APR Dealers. The dealer will connect to your vehicle, and install the update.¹


Money-Back Guarantee - Try our Software Upgrades for up to 30 days, risk free! If you are not satisfied, return to an APR Dealer to 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. APR Software may not be available for all vehicles. Stages, programs, and features may not be available for all ECUs.
2. Excludes some Software Upgrades, such as those included with a hardware purchase. Labor charges are at the discretion of the installer.
3. 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.

Tech Resources

Important fuel quality information
Important fuel quality information
Find your boxcode and revision
Find your boxcode and revision
Program switching guide
Program switching guide
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.

Applications

*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.