$799.00 House of Power BMW 135i ECU Tuning (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 135i Stage 1+2 Performance ECU Tune (N55) quantity — OR — Add to cart Categories: BMW 135i, Dyno and Tuning Services Tags: 135i, 3 series, bmw, Dyno, tune Description Description +95 Horsepower +110 Torque Performance ECU Tune for the BMW 135i N55 E82 Engine (2011-2013) Eliminate Top Speed Limiter Increased Throttle Response Optimized Fuel and Spark Same Tune but also Includes Catless Downpipe Installation at the Same Price Optimized for 93 Octane Related products BMW M3 E90/E92 (2008-2013) Stage 1 Performance ECU Tune (S65) $799.00 Select Options BMW M3 F80/F82 (2015-2016) Stage 1 Performance ECU Tune $1,099.00 Select Options BMW 535d (2007-2008) Stage 1 Performance ECU Tune (N57) $1,099.00 Select Options BMW 335d (2009-2013) Stage 1 Performance ECU Tune (N57) $1,099.00 Select Options