quick question. does a header made for the 05 ex fit an 05 dx? well basicly what i need to know is there ANY difference in the d17a1 and d17a2 except for vtec? thanks

 

The d17a1 has the cat bolted directly at the head. The d17a2 uses a b-pipe, going under the car to the cat.


D17a2 Manifold and cat. The cat is #5 in the second pic, and it bolts at the flange from the manifold:



Here is the d17a1 manifold. Notice how the cat sits RIGHT AT the head, under the manifold. The manifold and cat are one whole piece:



To convert over to an EX exhaust, you need basically a whole exhaust system. The manifold, B-pipe with cat, and cat back. You will also need to extend your second o2 sensor, as the one on the EX sits right before the cat, and yours is at the manifold.

 

props to RED.Em2 for the best explanation WITH PICTURES!!! WHICH ARE ALWAYS MORE FUN!! of the d17a2 vs d17a1 header dilemma

 

Eh its just too boring if I say:

"it is different because of the mounting of the cat"

Have to be specific when dealing with cars. I have learned that over the years.

 

dope thanks A LOT red, helped abunch. 3 thunds up (yup i grew a 3rd arm 4 that 3rd thumb lol) well im going to find out if im gonna finally end up doing a custom exhaust or not. most prob thinking ima stay wit a d17a1 header.

 

the best header IMO is d17a1 specific, its a Kamikaze header.

the only d17 header to have a 2 1/4" collector.

 

real cars don't have headers..... they have turbo manifolds.

 

^^ oh really? hmm... tell that to all the N/A K, F, and B series freaks out there

 

i was a b-series freak and i had a turbo manifold on that. and i am now a k-series freak with beastly turbo manifold on that!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by K20boiZ &raquo;</TD></TR><TR><TD CLASS="quote">real cars don't have headers..... they have turbo manifolds. </TD></TR></TABLE>

You'd get a pretty good beating from a bunch of N/A tuners here. Not to mention that Keichi Tsuchiya and other drivers from Japan actually prefer N/A over F/I.

 

set up a race and we'll find out.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by K20boiZ &raquo;</TD></TR><TR><TD CLASS="quote">set up a race and we'll find out. </TD></TR></TABLE>

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