APR ECU UPGRADE - 2.9T EA839 V6 (B9) (RS4/RS5)

APR

$899.95 - $1,799.95
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SKU:
ECU-29T-EA839-B9
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 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
  • Launch Control - Adds a new launch control strategy for better launches with more driveline protection
  • 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
  • Auto Start/Stop Inversion - Auto Start/Stop defaults to the off position
  • 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
  • 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
SPECS
Brand APR
Engine Aspiration Turbocharged
Engine Configuration V6
Engine Displacement 2.9L
Engine Family EA839
Engine Orientation Longitudinal
Fuel Type Gasoline
Market NAR
  ROW
Product Type ECU Upgrade
Part Number ECU-29T-EA839-B9
 
 
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

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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.

The APR Plus ECU Upgrade is the first step towards making more power, and it includes our limited powertrain warranty. This simple upgrade requires no engine hardware modifications, and produces 488 HP with 537 FT-LBS of torque. Gains as high as 75 HP and 89 FT-LBS of torque are available throughout the power band, making the vehicle exceptionally quicker in all scenarios.

 

The APR Plus ECU Upgrade matches the performance of our Stage 1 ECU Upgrade (91 octane). To get even more power, you can add any of our other Stage 1 compatible products and still be covered under the APR Plus warranty! If you're not interested in the APR Plus limited powertrain warranty, and want even more power, check out our other Stages.

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The APR Stage I ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications, and produces 488-550 HP with 537-606 FT-LBS of torque depending on fuel grade. Gains as high as 75-129 HP and 89-168 FT-LBS of torque are available throughout the power band, depending on fuel grade and factory output, making the vehicle exceptionally quicker in all scenarios.

 

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. 

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The APR Stage 1+ ECU Upgrade is the next step towards making more power when using E60-E85 fuel! This simple upgrade requires an APR HPFP and produces 561 HP and 608 FT-LBS of torque. Gains as high as 138 HP and 169 FT-LBS of torque are available throughout the power band, making the vehicle exceptionally quicker in all scenarios. Even more power can be had by adding additional bolt-on modifications.

 

APR Stage 1+ only makes more power on E60-E85 fuel over our stage 1 software. All other available octanes make the same power as Stage 1. 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.

 
 
 
 

APR CALIBRATION REPORT

STAGE HP TQ MAX GAIN MAX GAIN
Stock As Reported by Audi  444 HP 443 FT-LBS    
Stock As Measured by APR 458 HP 469 FT-LBS    
APR PLUS        
APR Plus (91 AKI) 488 HP 537 FT-LBS +75 HP +98 FT-LBS
STAGE 1        
91 AKI / 95 RON 488 HP 537 FT-LBS +75 HP +98 FT-LBS
93 AKI / 98 RON 498 HP 556 FT-LBS +90 HP +118 FT-LBS
100 AKI / 104 RON 524 HP 581 FT-LBS +115 HP +143 FT-LBS
104 AKI / 108 RON 532 HP 606 FT-LBS +129 HP +168 FT-LBS
E60-E85 550 HP 569 FT-LBS +104 HP +123 FT-LBS
STAGE 1+ W/ HPFP        
E60-E85 561 HP 608 FT-LBS +138 HP +169 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.
 
 

PURCHASING, GUARANTEE, AND UPDATES

How to Purchase - APR Software Upgrades are available through Authorized APR dealers. The dealer will connect to your vehicle, and install the update.¹ Alternatively you can mail your ECU to APR*. Fill out this form. Use this guide to remove your ECU. Mail your ECU to to APR, 4800 U.S. Hwy 280 W, Opelika, AL 36801, USA, and include the last 6 of your VIN on the outside of the box.

 

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.
*. Excludes APR Plus.