Labor Day Sale - Shop Now
1-800-680-7921
APR

APR Ultralink for 2.9T EA839 V6 (C8) (S6/S7) [INSTALL DEVICE ONLY]

2.9T V6 Engine Tune for the Audi S6 20-24, S7 Sportback 20-24​

Install Type

Part # ECU-29T-EA839-C8-U Be the first to write a review

APR Ultralink for 2.9T EA839 V6 (C8) (S6/S7) [INSTALL DEVICE ONLY]

In Stock
Free Shipping*
$116.96
Add to Wishlist
Does it fit my vehicle?
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:

  • 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
  • Stages - Multiple performance levels depending on installed hardware
  • Fuel Grades - Multiple octanes from which to choose
  • Ethanol - Ethanol support from E60-E85 for maximum performance
  • Acceleration - Accelerate faster with more power and reduced throttle lag
  • Linear Throttle - Pedal maps adjusted for a more linear feel
  • Brake Boosting - Left foot braking or brake boosting added
  • Rev Limiter - Increased redline for higher revving
  • Standing Limiter - Increased standing limiter for higher revving at idle
  • Speed Limiter - Go as fast as you want with the speed limiter out of the way
  • Exhaust Flaps - Enhanced power delivery and drivability through recalibrated exhaust flap actuation
  • Added Safety - Additional safety features and protection modes added
  • Economy - While cruising, or driving normally, your fuel economy may benefit from our optimized calibration
  • Boost Gauge - The factory boost gauge displays accurate boost and reacts more quickly
  • Power and Torque Gauges - The factory power and torque gauges are accurately rescaled
  • Flash Counter - Flash counter does not increase with each flash
  • Direct Port Programming - Clean and easy install to the factory ECU without opening the case
  • Free Updates - Get free updates for life
  • Guarantee - 30 day money back guarantee
Brand APR
Engine AspirationTurbocharged
Engine ConfigurationV6
Engine Displacement2.9L
Engine FamilyEA839
Engine OrientationLongitudinal
Fuel TypeGasoline
Install TypeAPR Ultralink - Tune from Home
MarketNAR
ROW
Product TypeECU Upgrade
Part NumberECU-29T-EA839-C8-U
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
ECU Order Form
Select VW/Audi MG1 under unlock type
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?

    Load More

    When you buy an APR Ultralink you use it to buy and install APR software on your vehicle, from the convenience of your own home, from the Ultralink Marketplace. Alternatively, you can always go to an APR dealer and they will sell and install software for you. Below is the retail price for most of our software. Any sales or promotions will not be reflected in these prices but will be in the Ultralink Marketplace. Learn more about the Ultralink here.

    APR ECU Upgrade Stages

    Each stage includes several adjustments and features to make the driving experience more enjoyable. We’ve not only made the engine more powerful, but we’ve improved acceleration, removed the speed limiter, enabled left-foot braking or brake boosting, properly rescaled the boost gauge, increased the stationary rev limiter, optimized thermal management and protection, designed the software to support normal bolt on modifications while not requiring any for the baseline configuration, and eliminated the need for a TCU upgrade to deliver maximum torque while still accurately reporting torque to the ECU.


    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 479-531 HP and 533-605 FT-LBS of torque with gains as high as +56-109 HP and +88-160 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.


    Please note, our E85 software is not a full flex fuel program. In this mode the engine is only designed to work on E85, as found directly at the pump, including both summer and winter blends from E60-E85. Using traditional pump fuels in this mode may result in engine damage. Do not manually blend with traditional pump fuel or race fuels or use race specific barrels of E85. To ensure proper E85 content levels, APR recommends using an E85 content sensor. Before using Ethanol, educate yourself and follow our switching guide.

    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 479 HP and 533 FT-LBS of torque with gains as high as +56 HP and +88 FT-LBS of torque at the wheels. Please check our warranty manual to understand modifications supported by APR Plus.

    Horsepower and Torque Dyno Charts

    Select a DynoSelect a Dyno Type

    APR Calibration Report

    StageHPTQMax GainMax Gain
    Stock As Reported by Audi 444 HP 443 FT-LBS
    Stock As Measured by APR 464 HP 449 FT-LBS
    APR Plus
    APR Plus (91 AKI)479 HP533 FT-LBS+56 HP+88 FT-LBS
    Stage 1
    91 AKI / 95 RON479 HP 533 FT-LBS +56 HP +88 FT-LBS
    93 AKI / 98 RON493 HP 553 FT-LBS +72 HP +108 FT-LBS
    100 AKI / 104 RON511 HP 581 FT-LBS +97 HP +136 FT-LBS
    104 AKI / 108 RON521 HP 605 FT-LBS +109 HP +160 FT-LBS
    E60-E85531 HP 581 FT-LBS +94 HP +132 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 Plus ECU Upgrade with a Limited Powertrain Warranty $1,799.95
    APR Stage 1
    APR Stage 1 ECU Upgrade$899.95
    APR Stage 1 ECU Upgrade from APR PlusFree

    Purchasing, Guarantee, and Updates

    Purchasing Options¹:


    1. Do-it-yourself: Purchase an APR Ultralink to connect your vehicle to the Ultralink Marketplace where you can shop, configure, and install APR software!†
    2. Do-it-for-me: Locate an APR Dealer and at their location they will sell and install APR software.


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

    We Suggest

    Reviews

      Your Review

      *Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

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