$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 335d (2007-2008) Stage 1 Performance ECU Tune (N57) $1,099.00 Select Options BMW 235i (2012+) Stage 1 Performance ECU Tune (N55) $949.00 Select Options BMW 135i Stage 1+2 Performance ECU Tune (N55) $799.00 Select Options BMW 435i (2012+) Stage 1 Performance ECU Tune (N55) $999.00 Select Options