Mercedes-Benz Stage1 to JB4 BETA Upgrade Kit
Upgrades your Stage1 to a JB4 including a new CANbus based control
board and OBDII add on cable. Allows full data logging, more map
options, smoother and stronger tuning performance, boost by gear for
improved traction, and many more features to come.
Not available in California. Worldwide Shipping Available.
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