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knock feedback
Ford Fiesta ST Mk8 / Mk8
CANbus allows the JB4 to take into account pedal input
Huge power and torque gains throughout the rev range
BMW I3 Mk1 Facelift (2017-2022)
JB4 Tuner for 2021+ Maserati MC20 3.0L Nettuno (BETA) dawn knock feedbackThe JB4 is a plug and play tuner that attaches to easy to access sensors in the engine bay and works with your factory ECU tuning to remap your boost, timing, and fueling for optimal performance and reduced turbo lag. Including maps for pump gas, race gas, and ethanol fuel mixtures up to 30% E85. This is how your MC20 should have come from the factory! JB4 installation is discreet and quickly removes without a trace when needed. Fuel economy during
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