JHM ECU Tuning 4.2L FSI V8

The JH Motorsports JHM ECU Tuning is a performance software upgrade specifically for the Audi B8 S5 equipped with the 4.2L FSI V8 32v engine. This tune is engineered to enhance overall vehicle performance, delivering more power across the entire RPM range, with a particularly aggressive increase felt above 3,000 RPM. Users have reported significantly improved throttle response, making the car feel more sensitive and eager. The tune also affects the exhaust note, reportedly making it quieter during cruising while maintaining loudness at wide-open throttle, and adding a distinct off-throttle burble. Installation requires a Windows computer with a wired broadband internet connection, a JHM Tuning-Flashing Cable (maximum 10 ft unless a powered USB hub is used), and a battery charger or equivalent power source capable of sustaining a 40-amp charge. The tuning process is performed remotely by flashing the ECU. This product is intended for racing competition use only and is not legal for highway or street vehicles. By purchasing, the user acknowledges and certifies that the vehicle will be used for racing applications or off-road use only. JH Motorsports Inc. provides no warranty for emissions compliance and advises that modifications may violate Federal or State emissions standards. There is a California Prop 65 warning regarding potential reproductive harm or cancer risks associated with chemicals in the product.