$899.00 Audi A4 Performance ECU Tune Want to add even more Horsepower? Upgrade to Stage 2 ECU Tune. (Catless Application) Adds an approx. 30-40 additional Horsepower! Check the box below: Upgrade to Stage 2 + $399.00 Product price Additional options total: Order total: Audi A4 B8 2009-2016 Stage 1 Performance ECU Tune quantity — OR — Add to cart Category: B8/B8.5 (2009-2016) Description Description +65 Horsepower +85 Torque Performance ECU Tune for the Audi A4 B8 Engine Eliminate Top Speed Limiter Increased Throttle Response Optimized Fuel and Spark Optimized for 93 Octane Related products Audi A4 B8.5 2009-2016 Stage 1 Performance ECU Tune $1,199.00 Select Options