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Discussion Starter #1
Question... What is the size difference between the JDM and USDM downpipes. I was looking at getting a fujitsubo super ti catback and I'd need a jdm downpipe for it. I was considering going catless, but can't decide. I was thinking, either way, of picking up a cheap usdm helix (or some other brand) downpipe and having a cat welded in while sizing it to fit the catback, is this feesable? Since I haven't been able to find any catted jdm downpipes and usdm ones are rare. Even if I went catless, I'd want a catted one around to swap in for emmissions or for any other emergency. Thanks!
Randy
 

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Discussion Starter #3
oh, i know for a fact that there is a size difference between a jdm dp and a usdm dp, why else would you NEED a jdm dp for a jdm catback. Thanks for the links anyways!
Randy
 
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