Description

Lighter than factory exhaust

giving your car a more controlled feel

• Improved Airflow

What Is Included

S68 JB4 Tuner for 2023+ BMW XM & 2024+ BMW X5M / X6M Optional Device Connection:JB4 Wireless Mobile Smart Phone Kit (Wireless Connection) Lighter than factory exhaustGains are 125whp on pump gas and up to 260whp on higher octane or E85 mixtures. The ultimate tune for your 4. 4L S68 powered BMW XM, X5M, & X6M. The JB4 allows you to go from factory stock to full race and everywhere in between. The JB4 installs and removes easily and includes many unique features not found in any other tune, including user adjustable 1st and 2nd gear boost limiting, smartphone integration, electronic wastegate control, ethanol fuel

Exchange/Return Notes