$1,599.00 Mercedes SL65 2007+ 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 SL65 2007+ Stage 1 Performance ECU Tune quantity — OR — Add to cart Category: SL65 Tags: benz, Dyno, ecu tune, mercedes, sl65, stage 1, tune Description Description +85 Horsepower +140 Torque Performance ECU Tune for the Mercedes SL65 2007+ Eliminate Top Speed Limiter Increased Throttle Response Optimized Fuel and Spark Optimized for 93 Octane Related products BMW 135i Stage 1 Performance ECU Tune (N54) $599.00 Select Options BMW 535i (2011-2016) Stage 1 Performance ECU Tune (N55) $999.00 Select Options BMW 135i Stage 1+2 Performance ECU Tune (N55) $799.00 Select Options BMW 235i (2012+) Stage 1 Performance ECU Tune (N55) $949.00 Select Options