Unlock serious performance from your EA825 4.0 twin turbo V8 with the JB4 plug and play tuning box. Developed for the latest Audi C8 RS6 and RS7, RS Q8, SQ7, SQ8 and S8 platforms, as well as the Lamborghini Urus, the JB4 delivers substantial power and torque gains without an ECU flash. With full CANbus integration via the OBD2 port and electronic wastegate control, it offers precise boost management, advanced safety features and intelligent diagnostics in a fully reversible package.
- Plug and play piggyback tuner that installs to the TMAP sensors and OBD2 port
- Full CANbus integration for refined control, safeguards and real time data
- Electronic wastegate control for accurate boost targeting
- Preloaded JB4 software with up to 8 maps for different fuels and modification levels
- Ethanol E85 compatible mapping available
- Read and clear fault codes directly from the JB4 interface
- Boost by gear control for improved traction and launches
- Smartphone app support for live gauges, data logging and on the fly map changes
- Free firmware updates via app or data cable as new maps and features are released
- Runs smoothly with factory drivability and works with all driving modes
- Not VIN locked so it can be removed without a trace and resold
- Rugged billet aluminium enclosure and a 5 year warranty
Optional Bluetooth connectivity
Add the JB4 PRO Bluetooth module to connect to the free JB4 PRO smartphone app on iOS or Android. View and record multiple live engine parameters, switch maps, fine tune settings and update firmware from your phone, all from within the JB4 enclosure for a clean, weather resistant install.
Vehicle fitment
- 2024+ Audi C8 RS6 Performance
- 2024+ Audi C8 RS7 Performance
- 2020+ Audi C8 RS6
- 2019+ Audi C8 RS7
- 2020+ Audi SQ7
- 2020+ Audi SQ8
- 2019+ Audi RS Q8
- 2019+ Audi S8
- 2018+ Lamborghini Urus
What is the JB4 and how does it work?
The JB4 is a sophisticated piggyback tune that interfaces with key engine sensors and the vehicle CANbus to optimise boost, timing, fueling and related parameters, similar in outcome to an ECU remap but without unlocking or flagging the ECU. It retains factory safety systems, installs and removes quickly, and receives ongoing free map and firmware developments.
Nforcd is a trusted UK supplier of JB4 tuning solutions and knows this product inside out. Ready to install? We offer professional fitting at our Warwickshire facility. To request a fitting quote, email Sales@nforcd.com.