View cart “BMW 535i (2008-2010) Stage 1 Performance ECU Tune (N54)” has been added to your cart. $999.00 BMW 435i (2012+) Stage 1 Performance ECU Tune (N55) 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: BMW 435i (2012+) Stage 1 Performance ECU Tune (N55) quantity — OR — Add to cart Category: BMW 435i Tags: 435i, bmw, Dyno, ecu tune, n55, stage 1, stage 2, tune Description Description +110 Horsepower +130 Torque Performance ECU Tune Features Eliminate Top Speed Limiter Increased Throttle Response Optimized Fuel and Spark Optimized for 93 Octane Related products BMW 550i (2006-2010) Stage 1 Performance ECU Tune $1,099.00 Select Options BMW 328i E90/E92 Stage 1 Performance ECU Tune (N52) $499.00 Select Options BMW 235i (2012+) Stage 1 Performance ECU Tune (N55) $949.00 Select Options BMW 335d (2009-2013) Stage 1 Performance ECU Tune (N57) $1,099.00 Select Options