“BMW 128i Stage 1 Performance ECU Tune” has been added to your cart. View cart $599.00 Mercedes SL55 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 $599.00 Additional options total: $0.00 Order total: $599.00 Mercedes SL55 Stage 1 Performance ECU Tune quantity — OR — Add to cart Category: SL55 Tags: benz, Dyno, ecu tune, mercedes, sl55, stage 1, stage 2, tune Description Description +30 Horsepower +20 Torque Performance ECU Tune for the Mercedes SL55 Eliminate Top Speed Limiter Increased Throttle Response Optimized Fuel and Spark Optimized for 93 Octane Related products BMW M5 F10/F13 (2012-2016) Stage 1 Performance ECU Tune $2,499.00 Select Options BMW 335i (2007-2011) Stage 1 Performance ECU Tune (N54) $599.00 Select Options BMW M5 E6x (2006-2011) Stage 1 Performance ECU Tune $599.00 Select Options BMW 550i (2006-2010) Stage 1 Performance ECU Tune $1,099.00 Select Options