OVERVIEW
The Burger Motorsports JB4 makes roughly 93 WHP on pump gas and up to 135 WHP on higher octane or E85 on the 2025+ G90 M5 and G99 M5 Touring, with no ECU flash and no VIN lock. It works through the S68's own sensor network and CANbus, so it is compatible with locked ECUs and stays out of the way of BMW's over-the-air updates.
Installation is plug-and-play — nothing is cut or spliced, and the tuner comes back out just as cleanly. Map switching, live gauges, logging of 40+ engine parameters and fault code read/clear all run through the free JB4PRO app over the Bluetooth adapter built into the unit.
SPECS
- 93 WHP on pump gas (91 octane minimum)
- Up to 135 WHP on higher octane fuel or E85 blends
- Multiple switchable maps, including E85 ethanol blends
- Custom boost limiting for 1st and 2nd gear
- Exhaust flap control compatibility
- Wireless smartphone control through the built-in JB4PRO adapter
- Displays and logs 40+ engine parameters; reads and clears fault codes
- No ECU flash — compatible with locked ECUs
- Not VIN-locked; fully reversible
- Free firmware updates
- 5-year warranty
- Designed and assembled in the USA
PARTS INCLUDED
- JB4 tuner module in a billet aluminum enclosure
- Plug-and-play installation harness
- JB4PRO Bluetooth adapter, built into the unit
- Free access to the JB4PRO smartphone app for iOS and Android
TECH RESOURCES
Required Extras
- 91 octane or higher pump fuel — required for the advertised gains. Higher octane fuel or an E85 blend is required for the 135 WHP maps.
- JB4PRO mobile app (free, iOS and Android) — used for map switching, gauges, logging and fault codes. The Bluetooth adapter is built into the unit, so no separate connect kit is needed.
- No additional hardware. Burger Motorsports specifies a plug-and-play install with no wire cutting or splicing.
Installation
VEHICLE APPLICATIONS
| Make / Model | Chassis | Engine | Years |
|---|---|---|---|
| BMW M5 | G90 | S68 4.4L Twin-Turbo V8 | 2025+ |
| BMW M5 Touring | G99 | S68 4.4L Twin-Turbo V8 | 2025+ |
Burger Motorsports does not publish a catalog part number for this JB4, so no part number is listed. Running an F90 M5? Use the S63 F9x JB4 instead.