natovang17

i got a eg with gsr swap. Just bought a jdm itr header, im wondering if the header will fit the same way the stock gsr will? or do i have to get a different cat/O ring? Let me know so i don't waste my time figuring it out the hard...LOL..Thanks

rick_rabies

it fits

hmoobhero

if you're using the stock cat then it's not gonna fit because the jdm itr headers has a 2.5in outlet which is bigger than the stock cat. lengths mite be different also. you would need a 2.5in cat and o-ring.

natovang17

Im using a hiflow cat. so hopefully it'll fit.

rick_rabies

thats what i used 2.5 and it fit

natovang17

Okay, i got a 2.5 pipe but now the itr o ring is to big, Can i use a stock gsr? or what do i need to get? let me know .thanks

weavertime1

iTrader: (2)

The donut gasket on the ITR header will be too large. My guess is that you have 2.5 inch piping and a highflow cat with the smaller (oem gsr, ls, etc.) flange. You need a larger 2.5 inch flange. Good luck!

natovang17

I have a custom made testpipe 2.5. It almost fits but i would i have to really really force it on. If i use without a itr oring it fits, so i was thinking of another oring? but not quite sure, i guess i'll just have to find out the hard. Try the oring from my stock gsr headers.

EJ1_Ex

iTrader: (1)

im running the same headers on my gsr, but i have to take my exhaust to the shop to get it to fit..

natovang17

What o ring do i need?

blueg6

i also have a jdm gsr with itr headers. my piping is 2 1/4. i needed to get a new donut, i got the one from a s2k and it fits good. the headers also sit lower and are longer i beleive.

blueg6

s2k O ring, and take it to a muffler shop.

natovang17

Where can i get s2k o ring? honda? muffler shop?? Just wondering..Thanks

blueg6

go to a honda dealership. a muffler shop may have one but i wouldnt count on it.

natovang17

Ok, i'll try it out..thanks