Skip to product information
1 of 1

ACM Technik LLC

APR ECU UPGRADE - 2.9T EA839 V6 (C8) (S6/S7)

APR ECU UPGRADE - 2.9T EA839 V6 (C8) (S6/S7)

Regular price $899.95 USD
Regular price Sale price $899.95 USD
Sale Sold out
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!


  • 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
View full details
  • Tune Specs
Stock As Reported by Audi 444 HP443 FT-LBS  
Stock As Measured by APR464 HP449 FT-LBS  
APR Plus (91 AKI)479 HP533 FT-LBS+56 HP+88 FT-LBS
STAGE 1    
91 AKI / 95 RON479 HP533 FT-LBS+56 HP+88 FT-LBS
93 AKI / 98 RON493 HP553 FT-LBS+72 HP+108 FT-LBS
100 AKI / 104 RON511 HP581 FT-LBS+97 HP+136 FT-LBS
104 AKI / 108 RON521 HP605 FT-LBS+109 HP+160 FT-LBS
E60-E85531 HP581 FT-LBS+94 HP+132 FT-LBS