APR - ECU Upgrade - B8/B8.5 Audi S4 / S5 3.0T FSI V6
Please note that your vehicle must be present in order to program your ECU. To schedule an appointment, please feel free to contact us.
APR is pleased to present the ultimate engine control unit (ECU) upgrade for the 3.0 TFSI V6. 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.
The ECU’s Simos 8 engine management system is responsible for proper operation of the engine during constantly changing environmental and load conditions. With built in compensational data for environmental variables and varying load conditions, the factory ECU is far more complex and intelligent than units found in other vehicle makes and marques.
APR's Calibration Engineers spent months calibrating the engine management system, including many hours of chassis dyno development. With a thorough understanding of the ECU’s torque structure, APR’s Calibration Engineers properly increased engine load to produce more power and torque across the entire power band. APR’s ECU Upgrade increases boost pressure, optimizes ignition timing, cam timing, lambda and more to produce higher output!
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.
Stage I and II ECU Upgrades
The APR Stage 1 ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications and produces 433-465 HP with 364-385 of torque. To get more power, the vehicle can be outfitted with an upgraded intake, cooler, catback exhaust, and various other bolt-on modifications all without requiring any new modifications to the ECU.
The APR Stage 2 ECU Upgrade is the next step towards making more power! This simple upgrade requires upgrading the supercharger pulley, crank pulley, or both pulleys and produces 448-527 HP with 381-471 FT-LBS of torque when upgrading a single pulley. A cooler is highly recommended, and required to meed advertised results with a dual pulley setup. Use NGK Iridium IX BKR9EIX spark plugs. To get more power, the vehicle can be outfitted with an upgraded intake, exhaust, and various other bolt-on modifications all without requiring any new modifications to the ECU.
APR Stage II+ ECU Upgrade
The APR Stage 2+ Ultra ECU Upgrade is the next step towards making more power! This simple upgrade requires the APR Ultracharger Throttle Body Upgrade, both the supercharger and crank pulley, intake, cooler, and exhaust and produces 478-541 HP with 429-475 FT-LBS of torque. Use NGK Iridium IX BKR9EIX spark plugs. To get more power, the vehicle can be outfitted with various other bolt-on modifications all without requiring any new modifications to the ECU.
APR has made a variety of paths available to upgrade from stock or previous APR software stages. Discounts are available for those purchasing a new APR Ultracharger kit or upgrading from a previous software stage. Please note that we will have to verify your previous software and/or purchases before installing the new software.
Please note that if you currently have APR Stage 2 software and are purchasing a new APR Ultracharger kit, there is no cost for the Stage 2+ software itself.