APR - Performance ECU Software - 2.9T EA839 V6 (B9) (RS4/RS5) VW PASSAT B8 year-2017-year-2017

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The Problem: For the MQB platform and the majority of road-going vehicles

With the reduced back pressure and large single-pipe design you can expect exhaust velocity to remain as high as possible throughout the entire system

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APR - Performance ECU Software - 2.9T EA839 V6 (B9) (RS4/RS5) VW PASSAT B8 year-2017-year-2017APR'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