on your 4-2-1 header. emailed you last week, and still looking for a response. anything?

 

didn't email me! lol

 

you have on DS?

 

Jus the 4-1 man, sorry.

 

Sorry for missing this message. I have been working in the shop a lot lately and now trying to catch up on office work.

I have replied to all PM's and am now working on email.

Thanks guys.

 

lol so do you have info or not?

 

The 4-2-1 header is made with a 2 1/2" final collector only. Larger will result in a velocity drop and defeat the purpose of the 4-2-1 design. If you want a 3" collector, you will need to go with our 4-1 header.

Thanks.

 

dan, do you know where i can find a 3 inch collector for it? the exit on the ball and socket is only 2.25. this is simply not enough for my setup. i am looking for a 2.5 or 3 inch collector that i can slip pipe over and band clamp on.

this is the header on my car dan, the collector seems super restrictive.

 

OMGBBQSAUCE!!! the legendary 12 second cobalt!!! i'm saving these pictures to study...

On a serious note, are you talking about the piece at the end stu where that ball mount flange is connected?

 

yes.

 

Still behind. Sorry..

That header is a Tri-Y header. The collector is sized exactly for high velocity. If you replace that collector with a 3" collector, velocity will drop. Since you are running boost, you can probably get away with it but you would be better off with larger primary tubes and a 4 into 1 design.

 

OMG its Dan. I sent you an email about a week ago regarding a header. Hope you get to it soon