as the title says i plan on running a rmf narrow replica from vteckid (already ordered) and the T1R 63 catback (designed to fit 97-01 type r's) on my integra..

i was told the rmf header is the same length as the oem jdm 4-1

so you would think i would need the jdm length to bolt it all up... dave from R&D motorsports told me that i actually needed the usdm length...

any help on which on i need?

 

If the RMF narrow is same length of JDM, then depending on the catback will decide your test pipe length. If the catback is for USDM ITRs, then you will need a USDM length.

 

Check this out mdpsEG's car.

https://honda-tech.com/forums/showth...434887&page=24

scroll down to mdpsEG's post, see that picture. Its a T1R 2.5'' B-pipe and T1r 2.5'' test pipe that bolts straight on to the RMF replica perfectly. It's on is a 95 integra. Get that same B-pipe and test pipe set up and you won't have to worry about fitment. message him and I'm pretty sure he'll help you out.

Hope that helps.