Description
Transform your S63-powered BMW into a track weapon with the Burger Tuning JB4 Tuner for the F9x M5, M8, X5M, and X6M. Delivering up to 80WHP on pump gas and 150WHP on race gas without touching your ECU, the JB4 brings insane acceleration and deep 10-second ¼-mile potential—while retaining stock-like drivability.
Unlike generic piggybacks, the JB4 features full CANbus OBDII integration for advanced safety, diagnostics, and electronic wastegate control for razor-sharp boost targeting. Installation is fully reversible and requires no permanent modifications.
Whether you’re stock or running bolt-ons, the JB4 adapts to your setup with preloaded fuel-specific maps, E85 compatibility, and future-proof firmware updates—all available for free via Bluetooth or data cable.
Key Features & Benefits
- Up to 80WHP & 100WTQ on pump gas
- Up to 150WHP possible on race gas or ethanol blends
- Plug-and-play installation with no ECU flash required
- Full CANbus OBDII integration for unrivaled tuning control
- Electronic wastegate (EWG) integration for precise boost targeting
- 8 preloaded maps for various fuels & mods (E85 compatible)
- Read & delete fault codes from the JB4 app
- Boost-by-gear for improved traction in lower gears
- View and log up to 40 real-time engine parameters
- Works in all driving modes with unchanged fuel economy during normal driving
- Compatible with JB4 Mobile and JB4PRO wireless adapters
- Fully reversible, not VIN-locked, and resellable
- Rugged billet aluminum JB4 enclosure for durability
- Designed & assembled in the USA
- 5-year warranty
Vehicle Fitment
BMW M5 (F90)
-
2018–Present M5, M5 Competition, M5 CS
BMW M8 (F91/F92/F93)
- 2020–Present M8 Coupe, M8 Competition
- 2020–Present M8 Gran Coupe
- 2020–Present M8 Convertible
BMW X Series (F95/F96)
- 2020–2023 X5M & X5M Competition
- 2020–2023 X6M & X6M Competition
Wireless Connectivity Options
- JB4 Mobile by DMAC – Gold-standard app with advanced gauge themes and logging (App $29, adapter sold separately)
- JB4PRO by Burger Motorsports – Fully integrated, weather-sealed adapter with free app and built-in log analysis tools
