JB4 Tuner for Audi A3 8V FWD, A4 B9, A5 B9 (190HP 2.0T)- Burger Tuning Select:JB4PRO Adapter (Uses Free JB4PRO App) delivering a significant boost in

delivering a significant boost in horsepower and torque for an exhilarating driving experience

5psi over stock peak

Engine Compatibility: All S55 engines

S55 BMW Applications

This kit supports up to 550hp with our 925cc* injectors

JB4 Tuner for Audi A3 8V FWD, A4 B9, A5 B9 (190HP 2.0T)- Burger Tuning Select:JB4PRO Adapter (Uses Free JB4PRO App) delivering a significant boost inAudi GEN 3B A3 8V, A4 B9, A5 B9 Performance Tuner The JB4 is a plug and play Audi tuner that plugs into easy access sensors in the engine bay The JB4 is a plug and play Audi tuner that plugs into easy access sensors in the engine bay and works with your factory ECU tuning to remap your boost, timing, and fueling for optimal performance and reduced turbo lag. It features a 64mhz processor allowing sensors to be sampled 800 times per second using