Various JB Plus (JB+) dyno charts on a 100% stock 335, 91 and 93 octane.

BMS Intake vs. factory airbox, best of three runs done back to back with each. Testing done at 13.5psi. Click here for hot air myth testing.

Stock, Stage 3 on a completely stock automatic 135i (MSD81 ECU) with 91 octane.

Baseline, Stage 3 on an automatic 335i with high flow downpipes and BMS intake, on 93 octane.

Looking for maximum horsepower for your 135i or 335i? Our 135i made 440rwhp / 426rwtq using the JB3 with a race gas map, Riss Racing downpipes, Riss Racing catback, Code3 intercooler, and the BMS dual cone intake. Staggering 175hp gains at the wheels, or almost 225hp at the crank! This map powered our 135i to 1/4 mile times of 11.8 and trap speeds of over 120mph! The worlds fastest N54!