View cart “BMW 428i Stage 1 Performance ECU Tune (N20)” has been added to your cart. $2,499.00 Mercedes AMG GTS 2015+ Stage 1 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: Mercedes AMG GTS 2015+ Stage 1 Performance ECU Tune quantity — OR — Add to cart Category: AMG GTS Tags: benz, Dyno, ecu tune, gts, m178, mercedes, stage 1, stage 2, tune Description Description +190 Horsepower +240 Torque Mercedes AMG GTS Stage 1 Performance ECU Tune Features: Eliminate Top Speed Limiter Increased Throttle Response Optimized Fuel and Spark Optimized for 93 Octane Related products BMW 128i Stage 1 Performance ECU Tune $600.00 Select Options BMW 535d (2009-2013) Stage 1 Performance ECU Tune (N57) $1,099.00 Select Options BMW 535i (2008-2010) Stage 1 Performance ECU Tune (N54) $999.00 Select Options BMW 535d (2007-2008) Stage 1 Performance ECU Tune (N57) $1,099.00 Select Options