“BMW M5 E6x (2006-2011) 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 328i E90/E92 Stage 1 Performance ECU Tune (N52) $499.00 Select Options BMW 535i (2008-2010) Stage 1 Performance ECU Tune (N54) $999.00 Select Options BMW 535i (2011-2016) Stage 1 Performance ECU Tune (N55) $999.00 Select Options BMW 535d (2007-2008) Stage 1 Performance ECU Tune (N57) $1,099.00 Select Options