E46Fanatics - View Single Post - HPF stage 2 M3 passing inspection?
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Old 01-18-2013, 04:46 PM   #23
Forcefed M3
Registered User
Join Date: Jan 2006
Location: Seattle, WA
Posts: 3,418
My Ride: HPF Stage 2.75
Originally Posted by mattfarrington View Post
Exactly. And if the cats were to be removed, all I would need to do is follow teh DIY guide on these forums for some programable O2 sensors, and program them for the values as shown, and I should be fine.
Or have a shop do it, but I don't plan on removing cats.
Turbo + cats = melted mess!
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