“BMW 135i Stage 1+2 Performance ECU Tune (N55)” has been added to your cart. View cart $600.00 BMW 128i 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: BMW 128i Stage 1 Performance ECU Tune quantity — OR — Add to cart Category: BMW 128i Tags: 128i, bmw, Dyno, ecu tune, stage 1, stage 2, tune Description Description +20 Horsepower +18 Torque Performance ECU Tune Features Eliminate Top Speed Limiter Increased Throttle Response Optimized Fuel and Spark Optimized for 93 Octane Related products BMW M6 F10/F13 (2012-2016) Stage 1 Performance ECU Tune $2,499.00 Select Options BMW 135i Stage 1 Performance ECU Tune (N54) $599.00 Select Options BMW 545i (2003-2005) Stage 1 Performance ECU Tune (E60) $599.00 Select Options BMW 535d (2009-2013) Stage 1 Performance ECU Tune (N57) $1,099.00 Select Options