JB4 Tuner for Porsche Macan S, GTS, Turbo Facelift and Porsche E3 Cayenne, S - Burger tuningJB4 for Porsche Macan S, GTS, Turbo Facelift and Porsche E3 Cayenne, S The Jb4 is an easy to install plug and play tuner that attaches to sensors in the engine bay and works with your factory ECU tuning to remap boost, timing, and fueling for optimal performance and reduced turbo lag. Includes full SENT sensor technology required for properly tuning the latest Audi platforms. Includes full CANbus allowing the JB4 to access and incorporate all engine