JB4 Tuner For BMW F & G Chassis N63, N63R, N63TU - 550i, M550i, 650i, 750i, M850i, X5, X6, X7Power gains of up to 100hp and 140tq to the wheels on a stock vehicle The JB4 performance Tuner includes CANbus, full data logging, multiple performance maps, user adjustable fuel control, boost by gear settings, WMI support, JB4 Mobile wireless compatibility, and much more. Compatible both as stand alone tuning systems or in conjunction with performance flash maps where logging, safety, and fine tuning tools are desirable. No ECU flash needed and
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JB4 Tuner For BMW F & G Chassis N63, N63R, N63TU - 550i, M550i, 650i, 750i, M850i, X5, X6, X7