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      07-14-2019, 11:06 PM   #7
Boosted M5
Private First Class
United_States
69
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193
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Drives: F10 m5
Join Date: Dec 2018
Location: Sf bay area

iTrader: (0)

My setup is with gutted oem downpipes, can those who are running with o2 spacers and no tune give some insight on brand and size needed to make cel not turn on? Would be nice to know so come inspection time I don't need to revert back to stock other than uploading stock flash to dme.
Appreciate 0