Unlock serious performance from your 2025 onwards Infiniti QX80 3.5L V6 twin turbo with the JB4 Performance Tuner from Nforcd. This plug and play piggyback tuning box connects to two easily accessed engine sensors and works seamlessly with the factory ECU to optimise boost, timing and fuelling. Expect stronger, smoother acceleration with reduced turbo lag and proven gains of up to 75whp and 79wtq on a stock vehicle. Wireless JB4 PRO smartphone connectivity is included for effortless control, logging and firmware updates.
- Direct fit for 2025 onwards Infiniti QX80 3.5L V6 Twin Turbo VR35DDTT
- Plug in installation, discreet and fully reversible, not VIN locked
- CANbus OBDII integration for real-time tuning using critical ECU data
- Preloaded QX80-specific JB4 software with up to 8 selectable maps
- Maps for 91 octane, 93 octane, E85 mixtures and unleaded race fuel, plus a stock map
- Boost by gear to help optimise traction and launches
- Read and clear fault codes directly through the JB4 system
- Log and view up to 40 parameters via the free JB4 PRO app on iOS and Android
- Factory-like drivability with fuel economy unchanged during normal driving
- Compatible with all driving modes
- Rugged billet aluminium enclosure
- Designed and assembled in the USA with a 5-year warranty
- 91 octane fuel or better required for performance gains
Using advanced CANbus data, the JB4 actively adjusts boost, timing, AFR and fuel trims in real time for smooth, safe power while retaining OEM safety systems. Unlike a flash remap, it is completely removable and leaves no trace when returned to stock, making it an ideal aftermarket upgrade or remap alternative. Nforcd knows this product well and it has been a popular choice for QX80 owners seeking a fast, reversible performance increase.
Order your JB4 from Nforcd with UK support and fast shipping. Prefer professional installation? Fitting is available at Nforcd in Warwickshire. Request a quote via Sales@nforcd.com.