The JB4 is the proven, plug-and-play tuning box for 991.2 and 992 Porsche 911s - Carrera, Carrera S, Carrera T, GTS, Targa 4 and Targa 4S (2017+). No coding, no cutting, no dealer visits.
Up to +40 hp and +60 lb ft at the wheels on stock cars
SENT sensor support and full CANbus OBDII integration - essential for 2017+ 911s
8 preloaded maps: 91 RON, 98 RON, ethanol blends, race fuel - switchable via optional JB4 PRO app
Safety-first logic cuts boost for knock, lean, overheat or low oil/coolant temp
Boost-by-gear, live logging, fault code reading/clearing and firmware updates via smartphone
Works seamlessly with Sport, Sport Plus and Normal driving modes. Requires 91 RON fuel or higher.
