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Old 06-10-2004, 08:19 PM   #1
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Join Date: Nov 2003
Location: Illinois
Posts: 3,033
Header and cat question.

This one may have been asked before but I didn't see it. Anyway, when replacing the headers on a "S" engine are the primary cats always removed? Or should a 100 or 200 cell high flow cat be put in place? I see many places that sell headers but don't sell or even mention cats with makes me believe they are not necessary. Perhaps the cats come with the headers? I was looking at headers from companies like S-CAR-GO and Instant G. I've seen/heard bad things about B&B exhausts so I'm not so sure about their headers. I hope someone can shed some light on this for me. Thanks.

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