jdm itr header ??

i plan on gettiing the jdm itr header for my si, but someone was telling me that i would have to straight pipe it cuz the collector is to big for the cat. is there an alternate route i can take instead of a loud straight pipe??

I haven't heard about this problem, but a muffler shop shouldn't have too much trouble rigging up some custom piping if necessary to make the header fit with a stock cat. That, or you can use custom piping to move the cat further back. This is not as expensive to do as you might think.

The JDM ITR header is a 4-1 and uses i think a 2inch collector.
It will not bolt up to your standard USDM Si cat and exhasut system.
However there are plenty of aftermarket cats that will fit, or else as JD said any good exhasut shop should be able to make up something for you.

JDM ITR header has a 2.5" collector...I would get a carsound cat as well to maximize performance....keeping the stock cat will bottleneck the flow

Originally posted by madtownhonda
JDM ITR header has a 2.5" collector...

Yes! that is right. thank you for the correction.
:cool:

thanks for the repiles but wherte can i find a carsound cat at??

that's the cheapest price you'll find ever..some places will price match

http://www.exhaustproslinc.com/carunconwita.html

get it quick though, it's on sale:)

fit an aftermarket cat or have a muffler shop run custom piping for the cat u dont "have" to run straight pipes. hasnt that guy ever seen a universal muffler or cat?

Originally posted by ldelaysionl
fit an aftermarket cat or have a muffler shop run custom piping for the cat u dont "have" to run straight pipes. hasnt that guy ever seen a universal muffler or cat?

yes i have but i wanted a brand to go off of. and i got that, there was no need for your ass hole of a remark days later to be included

my asshole of a remark? i only said u dont have to get "straight loud pipes" and asked if your friend who said u had to has ever seen a universal muffler or cat, how is that an asshole remark? i only responded to your question, if u didint want anyone to answer your question then why did u post it?