$599.00 Mercedes G55 2005-2011 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 G55 2005-2011 Stage 1 Performance ECU Tune quantity — OR — Add to cart Category: G55 Tags: benz, Dyno, ecu tune, g55, mercedes, stage 1, stage 2, tune Description Description +45 Horsepower +55 Torque Performance ECU Tune for the Mercedes G55 2005-2011 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 328i E90/E92 Stage 1 Performance ECU Tune (N52) $499.00 Select Options BMW M3 F80/F82 (2015-2016) Stage 1 Performance ECU Tune $1,099.00 Select Options BMW 550i (2006-2010) Stage 1 Performance ECU Tune $1,099.00 Select Options