JB4 Tuner for 2020+ Toyota Supra Mk5 / MKV / A90 / A91
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Automotive / Automotive

JB4 Tuner for 2020+ Toyota Supra Mk5 / MKV / A90 / A91

$529.00
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Power gains of up to 100hp on a stock vehicle without the risks of flashing! Units shipped 3/5/2021 or later include a free electronic wastegate (EWG) connector preinstalled in the JB4 harness! The JB4 is the most advanced and highly featured tuning system available for your Toyota Supra Mk5. Power gains are up to 80hp to the wheels (100hp crank) on a completely stock car on pump gas for a B58, gains with bolt-on parts, higher octane, E85 mixtures, and larger turbos are even higher.The JB4 features a simple plug and play installation harness for easy installation & removal and includes many features not found with any other tune. Including on the fly in dash map switching between factory and various performance maps, optional in-dash gauge displays for boost, boost limiting by gear for improved traction in lower gears, progressive water/methanol support, built-in data logging, built-in code reading, optional direct EWG control to prevent throttle closure with exhaust modifications,

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