APR ECU Upgrade - 2.9T EA839 V6 (B9 RS5)

APR is pleased to present the ultimate engine control unit (ECU) upgrade for the 2.9T EA839 engine!

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. 

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 APR's 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

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.

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 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, APR's 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.

Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.