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Old 05-20-2009, 07:53 PM   #20
Scooby Guru
Member#: 172486
Join Date: Feb 2008
Chapter/Region: NWIC
Location: Cheney, WA
95 V4 STi-RA swap
Stage 49.8


Originally Posted by JohnSellers View Post

Why shouldn't I now go ahead and try a high flow converter - can't be any more problematic than keeping the stock exhaust system?

Related question - does the rich-running nature of these cars cause any problem with catalytic converters? Can the excess fuel (with periodic afterfire) destroy the element? If so, then it's likely to happen with a HFC also - right? Does that make the track pipe a longer-lived solution?

Don't take my word for it, but this is what I heard:
Running rich will melt the cats eventually.

I also read a related issue of people's cats melting because of untuned BOVs.

OBX has resonated test pipes, and your exhaust will be loud and raspy still.
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