BMW B38, B46, B48, B58 JB Plus Quick Install Tuner X1 (E84) aggressive look

aggressive look

It's that simple

• Preloaded with custom JB4 Ford tuning software and up to 8 maps for various fuel and modification levels

Central electronics

BMW B38, B46, B48, B58 JB Plus Quick Install Tuner X1 (E84) aggressive lookUnlock Instant Power with the JB Plus Plug in up to 40 extra wheel horsepower in seconds with our top rated JB Plus quick install tuner for BMW & MINI, specifically designed for B38, B46, B48, and B58 engines. As a leading BMW tuner, the JB Plus allows user adjustable boost up to 4. 5 psi over stock, delivering impressive gains of up to 30 wheel horsepower and 40 wheel torque on the B48, and up to 40 wheel horsepower and 50 wheel torque on the B58