DC header/down pipe tip size?

[jszuba]

Guys, i forgot what the size of the tip in a DC header is...
2.25?
I need to match my cat + exhaust and can't remember what the size was.

[ikayto]

whatever it was, it fit with my stock cat piping perfectly. So as long as you're using a oem style cat then it will work.

[jszuba]

So if its stock like, then what is the point of getting a bigger exhaust?

[ikayto]

yea the collector is really the draw back of a quality header. The header design is probably more free flowing overall than a stock one. Some people like Jdm_inspired use a two piece header with a 3" collector

[NinJa_FLiP]

i think it's a 2" collector.. forgive me if im wrong, but i think its the same size as the megan header and ebay noname header also..

[jdm_inspired]

yea the collector is really the draw back of a quality header. The header design is probably more free flowing overall than a stock one. Some people like Jdm_inspired use a two piece header with a 3" collector

Thanks for using me as reference

I actually have a 4 piece tri-y header. I also have a 2.5 inch collector. Your DC is more than likely a 2.25 collector. There are some 2.5 inch collectors floating around.

[jszuba]

Great...!
So it does make sense ordering a larger exhaust...
Thanks guys!

[19dabeast85]

The F22 DC header's collector is no bigger than 2.0", if even that big. It's definitely not 2.25" or 2.5". I'm eventually going to have mine cut at the "2->1" junction and 2.5" pipe welded in with a universal cat. So that's an option to keep open if you want to maximize your flow

[Losiracer2]

yeah its prob. exactly 2". Even my GReddy 421 header has a 2" collector for my H22. That SUCKS! soon when i swap for a 5spd i'm installing a Hotshot 4-1 equal length runner header that has a 3" collector but reduced to 2.5" for the highflow cat and to match my exhaust.

[wherm]

It's 2". So is their cat-back system. I know cause I have both pieces and I just ordered a Flowmaster HushpowerII to install in place of my bad high-flow cat. I measured twice, ordered once.