APR is pleased to present the ultimate engine control unit (ECU) upgrade for the 4.2 FSI V8. APR’s ECU upgrade is available in octane-specific variations and is conveniently flashed to the vehicle’s factory ECU through the OBD-II port without any physical modification to the factory ECU.
Not only does our Stage 1 ECU Upgrade give you higher peak numbers of 444 horsepower and 357lb-ft. of torque, but also gains of up to 24 horsepower are available at higher rpms! Expect gains of 24 HP and 23NM with 98 octane.
APR’s ECU Upgrades provides an excellent leap in horsepower and torque while retaining OEM knock control sensitivity and other built in safety features. This results in an exciting and powerful upgrade, optimized for various fuel grades found around the world.