[JohnRoth]

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Plug in up to 40 extra wheel horsepower in seconds!
Finally our popular and well-proven JB Plus quick install tuner is available for B46, B48, and B58 applications! Boost is user adjustable up to 4.5psi over stock providing gains up to 30 wheel horsepower and 40 wheel torque on the B48 motor and up to 40 wheel horsepower and 50 wheel torque on the B58 motor. Timing and fueling remain managed seamlessly by the DME, preserving all factory safety systems.

While the JB4 is the ultimate tuning tool, the JB Plus (JB+) is a quick and simple way to add a few HP with minimal cost and minimal installation effort. Something that anyone can buy, install in under a minute, and really feel from the driver's seat.

Fuel economy during normal driving is unchanged. Automatically detects the engine type upon installation, allowing the same unit to be used for any B48 B58 F series application!

For those who want to start with the JB Plus and upgrade to the higher power, more advanced JB4 tune, we offer a 100% trade-up credit. To qualify, simply purchase the JB4 system from our website directly, and then after receipt, mail back the JB Plus along with its purchase receipt from BMS or any authorized reseller, and we'll issue a $239.00 refund against your JB4 purchase. The offer is valid for up to one year after purchasing the JB Plus. Made in the USA. 5-Year Warranty.

B58_JB_PLUS is CARB Approved Under Executive Order (EO) No.D-744-4 for all 2016-2018 BMW 230i, 330i, 430i, 530i, 340i, 440i, 740i, M240i, and X1 applications.

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