“BMW 135i Stage 1 Performance ECU Tune (N54)” 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 $600.00 Additional options total: $0.00 Order total: $600.00 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 135i Stage 1+2 Performance ECU Tune (N55) $799.00 Select Options BMW 550i (2006-2010) Stage 1 Performance ECU Tune $1,099.00 Select Options BMW M3 F80/F82 (2015-2016) Stage 2 575 Performance ECU Tune $2,599.00 Select Options BMW M6 F10/F13 (2012-2016) Stage 1 Performance ECU Tune $2,499.00 Select Options