I'm about to buy a DC JDM 4-1 header with 2.5 inch collector, and carsound cat. What do I need to connect it to my stock ITR exhaust?
Thanks!

 

depends on which carsound you buy. i think you should talk to SMSP for your cat needs. cos i know if you are going to mate the carsound to your OEM bpipe yoiu need to get a 2.5" fange welded on.

 

i got the carsound cat w/ my jdm DC header. I the carsound came w/ a gasket which i used to match up w/ my stock ITR exhaust..and it started leaking..i went back and got a bigger gasket and it stopped the leak. if that helps

 

Nothing

 

nothing huh...
ok, Your option is definitely cheaper.
Anyone else?

 

lol, as long as your carsound has the proper flanges, you should be good to go.

[e]don't forget donut gasket and bpipe gasket


[Modified by sackdz, 9:45 AM 6/10/2002]

 

That's my setup, and the only thing I needed was a few bolts for the cat. If I remember correctly I could not use the stock hardware.

 

A little help¿
So here are my three choices:

JDM 4-1 Stainless Steel Header (no gasket, no collector flange) Price: $377.99
JDM 4-1 Stainless Steel Header w/ gasket (no collector flange) Price: $407.99
JDM 4-1 Stainless Steel Header w/ gasket & collector flange Price: $462.99
...and a Carsound Cat from IPS racing.

 

^

 

The header, donut gasket, and Carsound cat. from IPS or SMSP are all that you'll need for the install. There will, however, be a large mismatch in ID between the outlet of the cat. and the inlet of the B-pipe.

 

Just a bit

 

Well that sucks.
So, it just fits anyway? Nothing to taper it down to size?
...and I gues superfat exhaust fixes all that.


[Modified by oryanh, 6:59 PM 6/10/2002]

 

It fits, but clearly the inlet is a severe bottleneck. Dave has two solutions - an adapter for the stock B-pipe that tapers from 2.5" to 2.25" or a full 2.5" cat-back system. The adapter would obviously be the more budget-minded approach.

 

This is the adapter for 60mm cat back systems in stainless.

 

This would be the most bang (whp) you can get for your buck. If the price is reasonable ofcourse......

 

i have jdm dc 4-1 and smsp carsound cat. and just order this exact same b-pipe adapter from smsp. I'm hoping to see some butt dyno difference after this mod...

 

Just use duct tape, it works for everything.

Hmm, just make a new b-pipe out of the tape and Jack in the Box straws...those things are HUGE!.

Kenton

 

Arby's now carries enlarged straws as well.

 

Mmmm, Beef & Cheddar w/ curly fries and a DR. Pepper. So delicious.

Kenton