F20 F22 F30 F32 F10 F15 F25 N55 JB4 Tuner

The JB4 tuner for N55-powered F-chassis BMWs: F20, F22, F30, F32, F10, F15 and F25. Plug-and-play, no coding, no VIN lock, no trace.

• Up to 80hp crank gains on stock engines - no prior mods needed
• Real-time boost control by gear, E85 auto-tuning, exhaust flap control via BC button
• OBDII diagnostics and fault code clearing built in
• Free lifetime firmware updates + JB4 PRO Bluetooth app for map switching and data logging
• Works seamlessly across driving modes - daily drivability intact