Quote:
Originally Posted by Baltothewolf
If in the end, the CEL comes back (probably got the P0420 code) you may or may not be able to punch out your cats and install a spark plug anti fouler drilled out to 1/2 inch. I may or may not know a few people who have done it. I totally haven't, as that's illegal, and don't mind spending 2,000$ for cats.
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I'll get an anti-fouler, but I see no reason to punch the cat out. I'd rather have a 94% functioning catalytic converter than none at all. I didn't mention, but there's noticeably less restriction after washing it, and it might be my imagination, but my butt dyno tells me I'm getting more at the top of the rev range.