View cart “BMW 428i Stage 1 Performance ECU Tune (N20)” has been added to your cart. $1,999.00 Mercedes GL550 Bi-Turbo 2010+ 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 GL550 Bi-Turbo 2010+ Stage 1 Performance ECU Tune quantity — OR — Add to cart Category: GL550 Tags: benz, bi turbo, Dyno, ecu tune, gl550, mercedes, stage 1, stage 2, tune, turbo Description Description +130 Horsepower +160 Torque Performance ECU Tune for the Mercedes GL550 Bi-Turbo 2010+ 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 Nissan 370z EcuTek Tune $1,000.00 Select Options BMW 535d (2007-2008) 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