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Hi Mike, is it possible / okay to use a F Series N55 JB4 on a F Series N20 engine? Apparently, BMS' JB Stage 1 can be used interchangeably across all engine types. Just wondering if that still applies to the JB4 since the device looks the same, except that maybe the FW and maps would need to be changed from N55 to N20? Thanks for any info and clarification.
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