An average gain of 47whp and 58ft-lbs of torque!
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An average gain of 47whp and 58ft-lbs of torque!
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Version 1.
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This add on kit for BMW N54 engines allows your JB4 to "2step" the engine
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Plug & play power — gain up to 40 horsepower in under one minute! 50 state legal performance!
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CARB Approved - Legal in All 50 States! CARB certified for sale in all 50 states
Plug & play power — gain up to 60 horsepower in under one minute!
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Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash. Includes JB4 side repair harness molex pigtail.
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Instant boost!
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Attaches to the JB4 allowing it to directly control both traditional port injection kits and WMI port injection kits.
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For N55 equipped E chassis vehicles only
Increase of +25 Horsepower, and +25 Torque, Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications!
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Increase of +10 Horsepower, and +15 Torque, Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications!
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Increase of +20 Horsepower, and +26 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance high-flow exhausts!
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Increase of +40 Horsepower, and +45 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance high-flow exhausts!
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Increase of +96 Horsepower, and +94 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance exhausts & high-flow air filters!
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This software is only compatible with Windows PC / Laptop.
Increase of +75 Horsepower, and +71 Torque! Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications!
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This software is only compatible with Windows PC / Laptop.
Increase performance without sacrificing reliability
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MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
06-02-2026