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      05-23-2023, 11:29 PM   #1
Benji17
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Drives: F30 335 X-Drive M-Sport
Join Date: Aug 2015
Location: mid mo

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Picking up an M6 next week, why DME tune and JB4?

Apologies if the title seems odd. I have been looking for an M6 for awhile, and I think I have found “the one”. It has the stage 2 DME tune, but also a JB4 installed. It has a custom downpipe from a speedshop in TX. I am trying to understand why there would be a need for both? I’m coming from a BM3 tuner on my N55, and the dual setup on the M6 just seems like too many steps. I am getting a PPI done hopefully this week, and as long as that comes back clean I am pulling the trigger. Any insight would be greatly appreciated. Thanks in advance

- A guy very close to attaining a longtime goal.
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