Description
The Burger Tuning JB4 Performance Tuner is the most feature-rich and powerful piggyback tuning solution for Mercedes-AMG vehicles equipped with the M178 4.0L Bi-Turbo V8 engine. Whether you drive a C63, E63, AMG GT, or GLC 63 (including S models), this tuner unlocks massive gains of up to +100whp and +100wtq on a stock vehicle — all while maintaining OEM-like smoothness and full daily drivability.
Using technology proven in BMW M-series tuning, the JB4 integrates seamlessly via CANbus OBDII and six sensor connections to provide advanced control over boost, fuel delivery, and timing. With support for E85 ethanol blends, boost-by-gear, and multiple custom maps, you can optimize performance for daily driving, drag racing, or even valet mode.
Wirelessly connect to your JB4 using JB4 Mobile or JB4PRO to log data, switch maps on the fly, update firmware, and monitor up to 40+ real-time engine parameters. For high-boost builds or big turbo applications, the optional Boost Control Module (BCM) provides direct wastegate control.
Completely plug-and-play, the JB4 installs in under an hour and removes without a trace — perfect for leased vehicles or resale flexibility.
Features & Benefits
- Gains of up to +100whp and +100wtq on a stock AMG
- Optimized performance for C63, E63, GT, and GLC models
- Fully compatible with S variants
- Ethanol (E85) tuning maps supported
- Boost-by-gear control for optimized traction and launch
- View and log 40+ engine parameters in real time via mobile app
- Customizable performance maps for pump gas, race fuel, ethanol, WMI, and valet
- On-the-fly map switching via mobile app
- Built-in safety protocols: knock, lean, temp protection
- Read and delete fault codes
- Exhaust flap control (where applicable)
- Works with all driving modes
- No impact on fuel economy under normal driving
- 91+ octane required for performance maps
- Quick plug & play installation
- Compatible with JB4 Mobile by DMAC ($29) and JB4PRO (free)
- Not VIN-locked – removable, transferrable, and resellable
- Durable billet aluminum JB4 enclosure
- Made in the USA
- Backed by a 5-year warranty
Optional: Boost Control Module (BCM)
For high-power setups targeting very high boost levels (e.g., WMI, upgraded turbos, race fuel), the optional BCM add-on allows direct wastegate control for increased boost capacity.
- Connects directly to the JB4 harness and boost control solenoid
- MSRP: $199 (coming soon)
Vehicle Fitment – M178 Engine
C-Class
-
2015+ Mercedes-AMG C63 & C63S
E-Class
-
2017+ Mercedes-AMG E63 & E63S
GT
- 2015+ Mercedes-AMG GT, GT S, GT R
- 2018+ Mercedes-AMG GT 63 & GT 63S
GLC
-
2015+ Mercedes-AMG GLC 63 & GLC 63S
Wireless App Support
JB4 Mobile by DMAC
- Premium app ($29) with advanced gauge layouts and customizable security features
- Requires the JB4 Mobile Bluetooth Adapter (sold separately)
JB4PRO by Burger Motorsports
- Free app and weather-sealed Bluetooth adapter designed in-house
- Built-in advanced log analysis, map controls, and firmware updates
What is a JB4?
The JB4 is a sophisticated plug-and-play piggyback tuner that connects to your vehicle’s sensors and ECU to dynamically remap boost, fuel, and ignition parameters. Unlike flash tunes, JB4 offers:
- Full CANbus integration
- Advanced safety systems
- Multiple maps for different fuels or driving scenarios
- Wireless app control and real-time data logging
- The ability to remove without a trace, perfect for lease returns or warranty concerns
With regular free firmware updates and ongoing map development, the JB4 is a future-proof tuning solution that evolves with your build.
