Looking for maximum horsepower for your stock turbo N54 135i or 335i? Our 135i made 446whp and 495wtq using the factory turbos! Mods include the JB4, BMS downpipes, BMS DCI, intercooler, OCC, methanol kit, and race gas. This map has powered our 135i to the record holding stock turbo 1/4 mile times of 11.2 and trap speeds of over 125mph!