I have a 01 Integra Type R with JDM 4-1 Headers.

The cat the was originally installed was before my time because I bought the car used. Anyways, now the cat started making a rattle inside and needs to be replace. I took it to the dealer because it's cover by the warranty but when they try to install it, it didn't fit because the headers are to big to connect with the cat. I called Inlinefour.com to see if they sell something to fix this problem of the fitment. The guy at Inlinefour.com said that all I need is the 2.5 Collector Gasket and 2.5 flange that they sell and that would do the trick.

Any advice is welcome guys. Thanks to all of you in advance.

 

There's also a difference in length (as far as I recall) between the USDM and JDM sized cats.

Did you buy it from the dealership with the JDM pieces?

 

just buy an aftermarket cat.

 

well, when I bought the car, it came with the JDM 4-1 Headers and AEM intake and aftermarket exhaust but I think the the exhaust pipe that connects from the cat to the exhaust is custom made because the tech that was working with my car said that the fittings were to big but that the cat fit in perfectly as far as the space between the headers and the exhaust pipe. If in case I need an aftermarket cat, which one do you guys recommend.

 

Stock cat is too small for JDM header. It's not worth the hassle.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dave-ROR &raquo;</TD></TR><TR><TD CLASS="quote">just buy an aftermarket cat.</TD></TR></TABLE>

yep.. there was one there already.. just replace it..

 

i have 2001 ITR B-pipe with 2.5" cat welded on.. it's ready to bolt on your sysytem.

It's not for sale yet but if you really need it. i might. let me know

or just get carsound cat or whatever

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C R Spec &raquo;</TD></TR><TR><TD CLASS="quote">If in case I need an aftermarket cat, which one do you guys recommend.</TD></TR></TABLE>

2.5" Car Sound. Contact Dave at SMSP and he'll build one to the exact length you need.

 

What's the number to get in contact with Dave or web address?

 

SMS Products
4747 Ewell Rd
Fredericksburg, VA 22408

SMSP Headers - Because diameter and length do make a difference
SMSP Exhausts - You don't have to be loud to make noise, email for the least expensive kit prices around

SMS Products now carries Honda/Acura Tranny Rebuild Kits with Synchros, Light Weight Flywheels, Mid and Hi Performance Clutches & Pressure Plates

OBDII California Compliant Cats Now Available

540-287-6384
smsproducts@adelphia.net

 

smsp carsound 2.5" is what im running w/ my jdm itr 4-1 to t1r catback combo and it fits perfect