i am planning to buy a DC two piece 4-2-1 header but it HAS NO TEST PIPE.. my question is will the header fit on the stock 4th gen testpipe ? and is it safe to run it without any problems .
what do you mean it has no test pipe. The two peace heaer will have a top part and a second part. the second part has a flex pipe and an O2 sensor bung, That will attach directly to your cat. pull your stock one off, and it will be a direct replacement.
i think the part he referred to as a test pipe is actually the downpipe of the header. it would be basically pointless to install just the upper half, in my opinion. it would flow good until it got to the factory downpipe and then choke again. it may make a little difference though.
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Racing in a mustang is like the special olympics............even if you win you're still retarded.
I did a side by side comparison of the downpipes and the stock downpipes look pretty good compared to the DC's...they are almost identical, minus the upper flange...the upper part however is a different story, leading me to beleive that it is this part that is restricting our performance...does any have any pics?? Oh, btw, i have an H23...
alright guys .. i only reason i just got the upper part is because i got a very good deal on it .. and the guy who was selling it didn't have the lower part. Anyways my only concern was ... do i have to by the lower part now .. or will the DC header just bolt straight on to the Stock down pipe . ..
it seems i am out of luck there .. and i'll have to but the lower part now ..
I honestly don't think it will bolt on. It's like saying the stock header can bolt with a DC downpipe. I think it's best for performancewise to get the whole set up if possible. If not, you're wasting your time trying to custom fit your setup.
Ok, just to clarify: the "top part" is the manifold, the bottom part, the "test pipe" as you refer to it, is the A-pipe. So I believe you're going to be needing a DC A-pipe, yes?
Originally posted by 4thGenReady2Go Ok, just to clarify: the "top part" is the manifold, the bottom part, the "test pipe" as you refer to it, is the A-pipe. So I believe you're going to be needing a DC A-pipe, yes?
The A-pipe seems to be commonly reffered to as the downpipe. Also to clarify a "test pipe" goes in place of the catalytic convertor and is just a straight pipe.
Regardless of what the downpipe is technically called. You need the whole set to achieve peak performance. It's like buying a CAI, but all you have is the CAI extension (referring to Iceman) and you're trying to connect it to the stock intake manifold. Bad analogy, but you get the idea.
The A-pipe seems to be commonly reffered to as the downpipe. Also to clarify a "test pipe" goes in place of the catalytic convertor and is just a straight pipe.
common or not, it's not proper (yes, I am the proper police). If the B-Pipe comes after the cat, then the A-pipe comes before it. Hehe, back to topic, exactly where did you get half a header from?
You're gonna be kickin' yourself if you go through with this and just install the manifold and not the A-pipe. GET THE A-PIPE.
ProjectPrelude, you're right... that WAS a bad analogy, considering no aftermarket companies make an intake manifold for our cars and if you buy a CAI of ANY type, you DO connect it to the factory manifold, unless it's been modified, but it's the OEM mani no less.
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Josh's '92 Milano Si (5spd)- The mod list is growing!!
Ok. I know that sucked. I was thinking straight. Here's a MUCH better one. It's like having a catback exhaust and all you got is the exhaust, but no catback. Ok, was that redemption or another bad analogy. Ok. Me go now.
^^Eh, actually, if you wanna be picked on a little more, "exhaust" depicts muffler and tubing, predominately back to the catalytic converter (cat-back). "Muffler" is what you were looking for I think.
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Josh's '92 Milano Si (5spd)- The mod list is growing!!
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