$699.00 Audi S5 4.2L 2007-2012 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 S5 4.2L 2007-2012 Performance ECU Tune quantity — OR — Add to cart Category: Audi S5 Tags: audi, Dyno, ecu tune, s5, stage 1, stage 2, tune Description Additional information Description +25 Horsepower +20 Torque Performance ECU Tune for the Audi S5 Eliminate Top Speed Limiter Increased Throttle Response Optimized Fuel and Spark Optimized for 93 Octane Additional information Stage 2 Stage 2 Related products BMW 135i Stage 1 Performance ECU Tune (N54) $599.00 Select Options BMW M5 F10/F13 (2012-2016) Stage 1 Performance ECU Tune $2,499.00 Select Options BMW 128i Stage 1 Performance ECU Tune $600.00 Select Options BMW 335i (2011-2013) Stage 1 Performance ECU Tune (N55) $999.00 Select Options