Unlock serious performance from your 2.0 turbo Mercedes with the JB4 plug and play tuning box from Nforcd. Designed for 2020 onwards Mercedes-Benz A35 AMG, CLA 35 AMG, GLA 35 AMG and GLB models, the JB4 safely raises turbo boost by around 3 to 6 psi and delivers proven gains of 30 to 60 whp on pump fuel, with even more potential on higher octane or E85 blends. Installation takes minutes using the easy-to-reach connectors on top of the engine and is fully reversible without touching the factory ECU.
- Direct-fit piggyback tuner for 2020+ A35 AMG, CLA 35 AMG, GLA 35 AMG, GLB 35 AMG and GLB 250 2.0T
- Power increases of 30 to 60 whp on pump fuel, with larger gains on higher octane or E85 mixtures
- Boost increase of approximately 3 to 6 psi with matching timing and fuel scaling
- Integrated CANbus OBDII control for smooth delivery, enhanced safety and advanced features
- Preloaded with up to 8 maps including ethanol compatible options
- Optional Bluetooth adapter and JB4PRO app for iOS and Android to view and record up to 40 parameters, switch maps, enable boost by gear, read and clear fault codes and update firmware
- Quick plug and play install using top-mounted engine connectors, removable in seconds with no trace
- Works with all driving modes and drives as smoothly as stock, with fuel economy unchanged during normal driving
- Not VIN locked so it can be transferred or resold
- Rugged billet aluminium enclosure, designed and assembled in the USA
- 5 year warranty
- 91 octane fuel or better required for performance gains
If you want an aftermarket remap alternative that keeps factory safety systems intact while adding noticeable speed and flexibility, the JB4 is a standout choice. Nforcd knows this upgrade inside out and it has been a popular option with our Mercedes-AMG customers. Order yours today, or contact us for expert advice. Professional fitting is available at Nforcd in Warwickshire - request a fitting quote via Sales@nforcd.com.