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Old 09-15-2012, 01:03 AM   #32
Big McLargehuge
Registered User
Join Date: Feb 2012
Location: Dallas
Posts: 7
My Ride: 2004 325ci
Not to hijack your thread but I think my o2's are plugged in wrong also. Which plug is which? Is round/pre cat and square/post cat, or vice versa? I've searched constantly and can't get a definitive answer.

Also, you should check out the Red Bull soap box derby on Sarurday. It's gonna be insane.
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