View cart “BMW 550i (2012-2016) Stage 1 Performance ECU Tune (N63)” has been added to your cart. $999.00 BMW 335i (2011-2013) 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 335i (2011-2013) Stage 1 Performance ECU Tune (N55) quantity — OR — Add to cart Category: BMW 335i Tags: 335i, bmw, Dyno, ecu tune, n55, stage 1, stage 2, tune Description Description +95 Horsepower +110 Torque Performance ECU Tune Features Eliminate Top Speed Limiter Increased Throttle Response Optimized Fuel and Spark Optimized for 93 Octane Related products BMW M3 E90/E92 (2008-2013) Stage 1 Performance ECU Tune (S65) $799.00 Select Options BMW 535d (2009-2013) Stage 1 Performance ECU Tune (N57) $1,099.00 Select Options BMW 535i (2011-2016) Stage 1 Performance ECU Tune (N55) $999.00 Select Options BMW 535i (2008-2010) Stage 1 Performance ECU Tune (N54) $999.00 Select Options