“BMW 535d (2007-2008) Stage 1 Performance ECU Tune (N57)” has been added to your cart. View cart $999.00 Note: Stage 2 is available and is for a catless application BMW 428i Stage 1 Performance ECU Tune (N20) 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 428i Stage 1 Performance ECU Tune (N20) quantity — OR — Add to cart Category: BMW 428i Tags: 428i, bmw, Dyno, ecu tune, n20, stage 1, stage 2, tune Description Description +80 Horsepower +65 Torque Performance ECU Tune Features Eliminate Top Speed Limiter Increased Throttle Response Optimized Fuel and Spark Optimized for 93 Octane Related products BMW M5 F10/F13 (2012-2016) Stage 1 Performance ECU Tune $2,499.00 Select Options BMW M3 E90/E92 (2008-2013) Stage 1 Performance ECU Tune (S65) $799.00 Select Options BMW 335d (2007-2008) Stage 1 Performance ECU Tune (N57) $1,099.00 Select Options BMW 535d (2009-2013) Stage 1 Performance ECU Tune (N57) $1,099.00 Select Options