ITR JDM 4-1 Header on AUS ITR

[jre]

so the cat back of the ITR exhuast is 2"? or 2.25" except that bottle neck section?

[tinkerbell]

Laughing at?

laughing at life, happy with your situation...

it is Aussie slang talk...

[Vincikwan]

Ah.....my bad. Not too familiar with aussie slang even though i have been here for 2 years. I wish i had the cash to by a CF bonnet too...LOL

[90xsi]

so the cat back of the ITR exhuast is 2"? or 2.25" except that bottle neck section?

its 2.25 the bottlekneck is 2.0

[90LAN]

aus dc2r is shit throw it away
it was used to past adr laws so the are pea shooting tiny pipes and collector
get the jdm 4-1 , 2.5' cat , and use the jdm 2.25" cat back
or extend your oz dc2r cat back by 10cm to suit the new setup

[Vincikwan]

I have changed my stock audm header to a spoon 4-2-1 header yesterday. I took out the cat n replaced it with a test pipe as well. So everything is 2.5inch and bigger all the way to the stock exhaust which i did not do anything to it as i wanted a stock look from the back.

First impressions are that it revs much better now. It did not really boost performance that much but you can feel a smoother engine reving all the way to the red line.

Going to get my vafc tuned to this new mod as well as the improved piping. So maybe then my butt will be able to feel the difference.

[bennjamin]

just to help out people -

i have a car , with a AUDM B18C7. It has a ITR 4-1 header and same sized cat+catback exhaust. OTherwise exactly the same as a stock type R.
On a recent dyno day it pulled 116kw at the wheels , compared to 3 other Type R's on the day it was one of the best numbers. I can say it is a noticeable improvement over the stock mild steel heavy header.
Plus the 98+ JDM type R makes 6kw more with this header (plus better fuel)

[Vincikwan]

Yup...116kw is really good. My 2001 stock dc2r is only pulling 102kw. When i put in the vafc to tune it with no mods, it came out 107kw.

[c01567]

Sorry to bump an old thread,

I have a stock audm dc2r
If i buy jdm dc2r headers and cat, what mods do i need to make to my audm catback?

[B.ITR.00]

I'm looking at doing the same.. tho I'm changing to the jdm headed to get the mugen twinloop sports exhuast catback to basicly just bolt on.. with my own cat. how ever im little confused to what cat to put on her... 100cel or 200cel lol

the JDM system is completely different has shorter cat different size pipe here and there ect. there's also a mounting bracket for the headers that's different for the JDM so i hear (corrections any one ?)

[c01567]

interesting, is it even worth switching to jdm headers/cat if i'm keeping stock audm exhaust?

[Chi]

Sorry to bump an old thread,

I have a stock audm dc2r
If i buy jdm dc2r headers and cat, what mods do i need to make to my audm catback?

Should bolt straight up.

Got a set of jdm 4-1's if itnerested

[tinkerbell]

hmmm, yes probably is still worth it?

the 4-1's are a superior design and quality...