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BMW N54 Ultimate Data Logging Guide - JB4 Data Logging
N54 Data Logging for BMW 135i, 335i, and 535i We recommend Burger Motorsports JB4 tune not only as an excellent stand-alone tune, but also for its advanced safety, boost control, and data logging. The JB4 works wonders whether you are running the JB4 as a stand-alone tune or coupling it with a back-end flash tune. Data