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cobra2814 · 01-09-2019, 03:19 PM

Do you guys know if I can safely run the stage 2 tune with the stock downpipe? I really don't want to trade out my stock downpipe due to the silly emissions laws here in Cali, but want the extra power the stage 2 offers.

01-09-2019, 03:19 PM	#43
cobra2814 Private First Class 112 Rep 122 Posts Drives: 2018 BMW M4 Competition Join Date: Sep 2018 Location: Oakland, California iTrader: (0)	Do you guys know if I can safely run the stage 2 tune with the stock downpipe? I really don't want to trade out my stock downpipe due to the silly emissions laws here in Cali, but want the extra power the stage 2 offers.
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