Unlock serious performance from your 2025+ Chevrolet Corvette C8 ZR1 LT7 with the JB4PRO plug and play tuner. This advanced piggyback tuning module connects to easy-access engine bay sensors and the OBD2 port to optimise boost, timing and AFR without unlocking or rewriting the ECU. On suitable high-octane fuel, the JB4PRO has shown gains of up to 100 whp peak and as much as 220 whp through the powerband, all while retaining factory safety systems and smooth drivability. Now available from Nforcd in the UK.
- Plug and play installation via engine bay connectors and OBD2, no ECU unlock required
- Preloaded maps for pump fuel, race fuel and ethanol blends up to E30, plus a stock/bypass mode
- Free JB4PRO app for iOS and Android enables on-the-fly map switching, data logging, fault code read and delete, performance estimates and firmware updates
- Advanced control including boost by gear for 1st to 3rd, adjustable boost safety limits and the ability to shape your desired boost and torque curve
- CANbus integration for factory-like refinement, compatible with all driving modes and with fuel economy unchanged during normal driving
- Not VIN locked, remove and revert to stock at any time, designed and assembled in the USA with a 5 year warranty
Fuel requirements: 91 octane or better is required for performance gains.
Vehicle fitment
2025+ Chevrolet Corvette C8 ZR1 LT7
Availability
ZR1 systems are low volume and made to order. Please allow approximately 1 to 2 weeks for dispatch.
Nforcd knows JB4 inside out and this JB4PRO is a compelling aftermarket upgrade for owners seeking a fast, reversible ECU remap alternative with full smartphone control. Order online today or contact our team for advice. Professional fitting is available at Nforcd in Warwickshire, email Sales@nforcd.com for a quote.