JB4 tuner for Audi S5 B9 with wireless Bluetooth for connecting to mobile app.
JB4 Group 7 This easy to install plug and play tuner 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. 5 Year Warranty. Made in USA. Free Shipping on JB4 tuners.