Thread: Alpine | M3/M4 F8X Motor Tuning - Full OBDII Flashing OEM Like
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      12-27-2017, 09:53 AM   #22
Alex@Alpine
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Drives: E90 M3
Join Date: Feb 2010
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Originally Posted by ReddsektoR View Post
is stage 2+ only meant for downpipes or will it still work fine with stock pipes and full catback?
Long term best with downpipes
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