Header w/OEM ITR exhaust mods

**Zilli** · 26-09-2006 08:18 AM

Gday all,

I'm planning my next set of mods to my DC2R, and i want to put most of my money into getting a quality header.

I read on here somewhere that someone actually put a aftermarket header on, and insted of changing the rest, cleared up some bottlenecks along the OEM DC2R system to allow better flow, and got some good gains. My budget wont extend to a cat back too ATM, so im thinking of getting the header, maybe a high flow cat (good idea?) and doing some bits and peices to the rest of the exhaust based on what ive read before.

Does anyone know who the member is who did this? or does anyone have an idea of what i can change to make it flow better?

thanks fellas

Kalen

**jimmeh** · 26-09-2006 08:28 AM

get the toda header. best bank for you buck. i think toda au sells them for $1500 and the other headers that come out of the US are $1600+
the SMSP header ($1600)is suppose to be the best on the US market. but look at how it compared to the toda header

you can find more header comparisions here
http://www.hondatech.com.au/forum/showthread.php?t=616

**Zilli** · 26-09-2006 09:02 AM

thanks champ, i was planning on getting Toda anyways, but i think TODA AU sells them for 1500... last time i looked.

i was kinda keen to understand a little more about the rest of the exhaust though

**BlitZ** · 26-09-2006 10:08 AM

std zorst is 2.25 with a few hickup...

i have heard people.. re-welding a few bottle neck sections.. which from memory is..:

just after the cat and at the axel flange..

Just your car up and have a look its really obvious..... you can get all the 2" parts cut out and enlarged to 2.25 to make it ideal for cheap..

**Limbo** · 26-09-2006 11:07 AM

bottleneck is in the secondaries of the manifold, If you change the headers you should be fine.

**Zilli** · 26-09-2006 11:15 AM

ok, so ill take a look and see where it can be worked on, but does it really make a difference? to the flow?

anyone recommend a good exhaust shop on the north side? or anywhere?

**fatboyz39** · 26-09-2006 06:37 PM

Pm dynodave

**SKREMN** · 06-10-2006 06:23 PM

for the best flow your best off changing the whole system and not retaining any stock piping

I'm selling my high flow cat its got 2 1/2 inch flanges
i actually noticed a differant sound and not more power but the powerband changed to lower so it made a differance