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Forum name	4G63 Tech
Topic subject	RE: downpipe......YES or NO
Topic URL	http://forums.2gnt.com/dcboard.php?az=show_topic&forum=67&topic_id=6954&mesg_id=6960
6960, RE: downpipe......YES or NO Posted by eclipzGST, Dec-31-69 06:00 PM Originally posted by 1fastpos Most aftermarket downpipes delete your cat. Yes buy the downpipe. Port the o2 housing and exhaust manifold too. Actually, not many do at all... Don't go porting anything yet. You're still on the stock turbo. It'll be awhile before you NEED porting.

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