I was wondering if it was a good idea to put on my jdm dc sports header on w/my stock exhaust system? Another question, is the itr exhaust piping 2.25?
Thanks

 

The DC JDM 4-1 is nice, but has a 2.5 inch collector, so you need to get a test pipe/cat to fit it, or just have a new flange welded onto your cat. Either way, it'll work ok with stock exhaust, but, your factory cat is very restrictive, you may want to consider changing it out.

As far as the stock piping, much of it is 2.25 inch, but, it bottle necks bown to 2 or less at certain places in the B-pipe...

Later,
Aj

 

DC JDM is good. ONly thing to be sure you are aware of going into one is that they have poor ground clearance. Moreso than the OEM JDM and the Toda is supposed to be even better.

Trey

 

I was wondering if you have any or know where I can view pictures of headers with the flange welded on because i'm not sure if i have one welded on to my header. I got the header from optauto, which they say that all their headers come with a flange.
Thanks!
Terry

 

You have the right flange. What are you expecting.