Give your 2014 onward Porsche 911 Turbo or Turbo S the performance it deserves with the JB4 plug-in tuning module, supplied by Nforcd. This piggyback tuner works alongside the factory ECU to optimise boost, timing and fuelling for sharper response and reduced turbo lag, delivering gains of up to 140 hp and 176 lb ft at the wheels on a stock vehicle. No ECU flash is required and it is compatible with locked ECUs.
- Up to 140 hp and 176 lb ft to the wheels on a stock car
- Plug and play installation that retains OEM safety systems, with no ECU flash needed
- Preloaded with up to eight maps including 91/93 octane, E85 blend and Valet/low-boost modes
- Optional JB4 PRO Bluetooth adapter with free JB4PRO app for map switching, datalogging and firmware updates
- Advanced CANbus OBDII integration, read and clear fault codes, boost by gear and view up to 40 live parameters
- Stealth fit, not VIN-locked and removable without a trace, billet aluminium enclosure, designed and assembled in the USA with a 5-year warranty; 91 octane or better recommended
Vehicle compatibility
- Porsche 911 Turbo and Turbo S 991.1 2014 to 2016
- Porsche 911 Turbo and Turbo S 991.2 2017 onwards
The JB4 offers a fast, reversible upgrade path for your 991 Turbo, combining ease of installation with powerful, configurable maps for different fuels and setups. Nforcd knows this product well and it has been a popular choice for Porsche owners seeking an effective aftermarket tuning solution without unlocking the ECU.
Order your JB4 from Nforcd today. Prefer professional fitting? Installation is available at Nforcd in Warwickshire. Request a fitting quote via Sales@nforcd.com.