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

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
• 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
• 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

Available Stages

APR Stage 1

The APR Stage 1 ECU Upgrade is the first step towards tuning your engine. It produces up to 488-550 HP and 537-606 FT-LBS of torque with gains as high as +75-129 HP and +89-168 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

APR Stage 1 Plus

The APR Stage 1+ ECU Upgrade is the next step towards tuning your engine. It produces up to 561 HP and 608 FT-LBS of torque with gains as high as +138 HP and +169 FT-LBS of torque at the wheels, on E60-E85. Use this tune with an APR HPFP fueling upgrade. 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, a