Pay in 4 interest-free payments of $124.88 Learn more
Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
It supports DME FlexFuel Integration when using E85 fuel
If your vehicle's DME required a Femto unlock and you've already done it
BMW 228i xDrive
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100% carbon fiber
S68 JB4 Tuner for 2025+ G90 / G99 BMW M5 x4 m carbon fiber intakes It supports DME FlexFuel IntegrationGains are 93whp on pump gas and up to 135whp on higher octane or E85 mixtures. The ultimate tune for your 4. 4L S68 powered G90 BMW M5. 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 support,
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