Description
The Burger Tuning JB4 for Mercedes-Benz C43 AMG and GLC 63 AMG 2.0L Turbo Hybrid engines provides a safe, plug & play performance upgrade with power gains from 30 to 65whp on pump gas. Designed specifically for the 2023+ C43 AMG and GLC 63 AMG hybrid models, this tuner increases turbocharger boost by 3-6 psi, while expertly rescaling timing and fueling for smooth, reliable performance.
Installation is quick and reversible, requiring no cutting or splicing of factory wiring. The JB4’s unique CANbus integration delivers superior tuning precision and smoothness compared to traditional 2-channel tunes. Wireless smartphone connectivity allows real-time data monitoring, map switching, and firmware updates, putting advanced tuning features at your fingertips.
Key Features & Benefits
- Power gains ranging from 30 to 65whp on pump gas
- Improves 0-60 mph acceleration and 1/4 mile times
- Preloaded with up to 8 custom JB4 maps for various fuels and mods
- Ethanol (E85) compatible tuning maps included
- Reads and clears fault codes for easy diagnostics
- Real-time logging and viewing of 40+ engine parameters via JB4 app
- Boost limiting by gear for controlled launches
- Compatible with JB4 Mobile and JB4PRO wireless adapters
- Simple plug & play installation—no ECU flashing or permanent wiring changes
- CANbus OBDII integration for advanced tuning and diagnostics
- Maintains smooth, factory-like drivability and supports all driving modes
- No negative impact on fuel economy during normal driving
- Requires 91 octane fuel or better for best results
- Not VIN locked—removable and transferable without trace
- Rugged billet aluminum enclosure protects the unit
- Made in the USA with a 5-year warranty and free USA shipping
Vehicle Fitment
Mercedes-Benz
- 2023+ Mercedes-Benz C43 AMG 2.0L Turbo Mild Hybrid (M139 engine)
- 2023+ Mercedes-Benz GLC 63 AMG 2.0L Turbo Plug-In Hybrid (M139 engine)
What is the JB4?
The JB4 is an advanced plug & play performance tuner that installs between your Mercedes’ sensors and ECU, intelligently adjusting boost, timing, and fueling to unlock significant horsepower and torque gains while maintaining factory-level drivability. Featuring industry-leading CANbus integration, wireless smartphone control, frequent free firmware updates, and multiple custom tuning maps, the JB4 has set the standard for turbocharged vehicle tuning worldwide for over a decade.
