B38/B46/B48/B58 JB Plus Quick Install Tuner Wire Selection:All BMW Models Except X1 X2 & MINI (3 Wires) 3' F34 GT (07/2012 —

3' F34 GT   (07/2012 — 06/2016)

& F34 GT (All years)

Click here for JB4 Upgrades

The stock downpipe robs your EA888 engine with high back-pressure suffocating your turbo and stifling your power goals

and exhaust note on your S55 powered M4

B38/B46/B48/B58 JB Plus Quick Install Tuner Wire Selection:All BMW Models Except X1 X2 & MINI (3 Wires) 3' F34 GT (07/2012 —Description Plug in up to 40 extra wheel horsepower in seconds! Finally our popular and well proven JB Plus quick install tuner is available for B46, B48, and B58 applications! Boost is user adjustable up to 4. 5psi over stock providing gains up to 30 wheel horsepower and 40 wheel torque on the B48 motor and up to 40 wheel horsepower and 50 wheel torque on the B58 motor. Timing and fueling remains managed seamlessly by the DME preserving all factory