Unlock serious performance from your 2021+ Mercedes-Benz E450, E580, E53 AMG, GLE53 AMG and 2020+ AMG GT43/GT53 with the JB4 plug-and-play tuner from Nforcd. This BETA application interfaces with your factory ECU to raise boost and optimise timing and fuelling for stronger, smoother power and reduced turbo lag. Installation is discreet, fully reversible and keeps fuel economy unchanged in normal driving, with full compatibility across factory driving modes.
- Power gains from approximately 50 to 100 hp depending on fuel quality and map selection
- Advanced CANbus OBDII integration reads key ECU data for precise real-time tuning and seamless power delivery
- Preloaded with up to 8 maps including 91 octane, 93 octane, E85 blend, unleaded race fuel, stock and valet
- Boost by gear control in 1st, 2nd and 3rd to aid traction and launches
- Read and clear diagnostic fault codes within the JB4 system
- Works with the optional JB4 PRO Bluetooth 4.0 adapter and free JB4PRO app to log up to 40 parameters, switch maps and update firmware; adapter fits inside the enclosure for improved weather protection
- Quick plug-and-play installation, not VIN locked and removable without a trace for resale or transfer
- Rugged billet aluminium enclosure, designed and assembled in the USA with a 5 year warranty
- Improves 0 to 60 mph and quarter-mile performance when mapped correctly
- 91 octane or higher fuel required for performance gains; compatible with E85 mixtures where available
Available from Nforcd with UK support and fast delivery, the JB4 is a proven aftermarket tuning box for turbocharged Mercedes-Benz models, offering major gains without an ECU flash. Nforcd knows this product well and it remains a popular choice with our customers. Professional fitting is available at Nforcd in Warwickshire. To request a fitting quote, email Sales@nforcd.com. Order yours today and feel the difference.