JB4 Tuner for S63 F9x M5/M8/X5M/X6M mclaren-m838t-engine-variants-2011-2021-esr5712637 Installation is straightforward
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Live Spec
JB4 Tuner for S63 F9x M5/M8/X5M/X6M mclaren-m838t-engine-variants-2011-2021-esr5712637 Installation is straightforwardPower gains of up to 80WHP horsepower on pump gas and up to 150WHP on race gas on a stock vehicle without the risks of flashing! The M JB4 takes everything that is great about the all wheel drive F9x M5 & M8 platform and amps it up to the next level. Power gains of up to 80whp and 100wtq bring the car to life allowing 1 4 mile potential deep into the 10s. Unlike other generic tuning devices, the JB4 includes full CANbus integration via the OBDII port
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