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Old 12-22-2007, 09:05 PM
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Modified Header

Hey guys, I just saw on preludeonline.com, that a couple of years ago, someone bought a DC header, and modified it like so. The 2-1 piece had a measured ID of 1.8 inches at the rear flange, so the kid cut the whole piece of pipe out at the point where the 2 pipes met the single pipe. (The piece where the flex joint is). He replaced it with a piece of true rigid 2.5" ID pipe and welded it into place. He used a donut flange at the rear flange to replace the piece of flex pipe so that it wasn't too rigid, and now he has a true 2.5" exhaust from the header back. My question is, would this be an improvement over the regular DC header? I'm a competent welder and could easily do this mod, I just don't know if it would be worth the time. It's a shame I don't know anyone with a custom header, because I'm also a competent CAD drafter and could probably create a usable CAD drawing of one and get one made for much cheaper lol.

Here is the link to the actual post that contains a link to the pictures. There are other pictures in the album too, so look through it all.

Last edited by BadMofo; 12-22-2007 at 09:15 PM.
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Old 12-22-2007, 09:20 PM
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Yeah a lot of people do that its called the collector mod.

ps I looked through his pics and that is well done. Now if I could get some ss pipe and do it to mine.
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Old 12-22-2007, 10:13 PM
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You can get a 4-1 KTeller header with 2.5" collector-back for about $160+shipping from www.kteller.com
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Old 12-22-2007, 10:45 PM
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I can see it being an advantage, but I'd be more worried about getting to the collector than the collector itself. That's where teh restriction is.
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Old 12-22-2007, 10:52 PM
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I can see it being an advantage, but I'd be more worried about getting to the collector than the collector itself. That's where teh restriction is.
Anything is better than standard DC since it's basically OEM spec.
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Old 12-22-2007, 11:36 PM
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Yeh, that's what I thought.
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Old 12-23-2007, 01:04 AM
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Old 12-23-2007, 01:07 AM
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kteller is baller imo!
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Old 12-24-2007, 03:42 AM
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Kteller is el shxt. But I wonder if 4-1 is better or worse than 4-2-1. Oh well.. I guess the price is right at under 200 bucks...
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Old 12-24-2007, 04:45 AM
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Quote:
Originally Posted by Si Speed View Post
You can get a 4-1 KTeller header with 2.5" collector-back for about $160+shipping from www.kteller.com
does any one on here have there 4 into 1? I looks nice but also looks like a pain to install.
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Old 12-24-2007, 12:42 PM
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http://www.kteller.biz/prodtype.asp?...ageHistory=cat

Go down to the JVT Header section...and I see the 5th gen Lude, but it says 97-07 N/VTEC

I didn't know there was a 5th gen without VTEC...Hah
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Old 12-24-2007, 01:19 PM
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Originally Posted by mizlude View Post
does any one on here have there 4 into 1? I looks nice but also looks like a pain to install.
Reakpl has a SMSP. 98vtec and ogsmakdade both have RMF's.

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Originally Posted by Pooponurhead View Post
http://www.kteller.biz/prodtype.asp?...ageHistory=cat

Go down to the JVT Header section...and I see the 5th gen Lude, but it says 97-07 N/VTEC

I didn't know there was a 5th gen without VTEC...Hah
They meant non-SH.
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Old 12-24-2007, 01:28 PM
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I knew dat...even still...why theys be hatin on the SH?

Tired of all these jive turkeys knockin on the SH...Damn. But seriously...why do they do that?
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Old 12-24-2007, 01:28 PM
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Yeah I figured it meant non-sh... unfortunately I have an SH. Anyone know how hard it would be to modify it to fit? Is it just a matter of modifying the mounting brackets? Or is the collector going to actually be too short or too long?
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Old 12-25-2007, 08:47 PM
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As far as I know the only difference is that the cat is shorter on the SH, so all you need to do is have a half decent exhaust shop modify the cat back and you'll be set.
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