N55 BMW Performance Tuner
B48/B58 JB+ Quick Install
JB plus BMW 335 135 tune

Plug in up to 40 extra wheel horsepower in seconds!

Finally our popular and well proven JB+ quick install tuner is available for 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 remains managed seamlessly by the DME preserving all factory safety systems.

While the JB4 is the ultimate tuning tool the JB+ is a quick and simple way to add a few HP with minimal cost and minimal install effort. Something that anyone can buy, install in under a minute, and really feel from the drivers 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! Not legal for sale or use within California.

For those who want to start with the JB+ 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+ along with its purchase receipt from BMS or any authorized reseller and we'll issue a $199 refund against your JB4 purchase. Offer is valid up to one year after purchasing the JB+.







B48/B58 Applications:

BMW 2 Series
• 2017+ F22 F23 B58 240i
• 2017+ F22 F23 B48 230i

BMW 3 Series
• 2016+ F30 B58 340i and 340ix
• 2016+ F30 B48 330i and 330ix

BMW 4 Series
• 2016+ F32 B58 440i and 440ix
• 2016+ F32 B48 430i and 430ix


2016 BMW 340i, 91 octane, stock vs. JB Plus
B48/B58 JB+ Quick Install

Intro Price $199.00
REG. $229.00
Not available in California. Worldwide Shipping Available.
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135 335 N55 Jb4 Intake
BMW N55 135i 335i Performance Intake
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