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Old 03-11-2012, 10:09 PM
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DEI header wrap

In preparation for my exhaust (went with the Greddy Ti-C, finally) I decided to go ahead and wrap the header instead of using a metal heat shield. This was my first experience with wrapping a Honda header--its definitely trickier simply because its small and I've got big hands lol. It turned out well imo. Is anyone else running a wrapped header?

Pix below...

Wrapped and masked off the stainless flanges


A different view, before high temp silicone..


3 views after the paint and masking tape removed.


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Last edited by okfirearms; 03-15-2012 at 01:35 AM.
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Old 03-11-2012, 11:49 PM
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Re: DEI header wrap

Looks good! I've got a roll of black DEI wrap waiting to go on mine. How big of a pain were the metal zip ties?
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Old 03-12-2012, 01:42 AM
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Re: DEI header wrap

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Looks good! I've got a roll of black DEI wrap waiting to go on mine. How big of a pain were the metal zip ties?
Its not hard... the biggest tip I can give u is to soak your wrap in warm water, doublecheck your measurements before u cut, and use plastic zip ties to secure first then replace them with the metal ties. You can tighten them easily with a flathead screwdriver and needlenose pliers.
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Old 03-12-2012, 03:22 AM
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Re: DEI header wrap

i've done a header on a B series and I have my intake pipe wrapped on my lude. DEFINITELY WEAR GLOVES AND LONG SLEEVES!! fiberglass sucks!!

nice job. what'd you spray them with though?
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Old 03-12-2012, 03:50 AM
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Re: DEI header wrap

some wraps just collect moist there and your header rusts more quickly
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Old 03-12-2012, 07:00 AM
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Re: DEI header wrap

I did mine. I didn't even bother using the metal zip ties, they seemed pretty worthless. there was a definite change in undergone tenperature, which I was happy about

and no typet, quality headers don't rust. since stainless steel doesn't rust
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Old 03-12-2012, 07:13 AM
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Re: DEI header wrap

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Originally Posted by UPSluder View Post
and no typet, quality headers don't rust. since stainless steel doesn't rust
who knows what material those megan etc ebay headers are
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Old 03-12-2012, 07:21 AM
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Re: DEI header wrap

that's why I put "quality" in there lol
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Old 03-12-2012, 08:34 AM
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Re: DEI header wrap

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Originally Posted by TypeT View Post
some wraps just collect moist there and your header rusts more quickly
Couldnt have said it better myself!
except, replace the word "some" with "ALL" -- its holds moisture inbetween the wrapping and the metal.
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Old 03-12-2012, 11:50 AM
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Re: DEI header wrap

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Originally Posted by SRV613 View Post
Couldnt have said it better myself!
except, replace the word "some" with "ALL" -- its holds moisture inbetween the wrapping and the metal.
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Originally Posted by TypeT View Post
some wraps just collect moist there and your header rusts more quickly
A quality stainless header shouldn't rust... eBay header probably would.

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Originally Posted by Wolf95 View Post
i've done a header on a B series and I have my intake pipe wrapped on my lude. DEFINITELY WEAR GLOVES AND LONG SLEEVES!! fiberglass sucks!!
nice job. what'd you spray them with though?
Amen brotha! Long sleeves and gloves are a must. I sprayed it with DEI black silicone hightemp spray. Seals the wrap and hardens it.
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Old 03-12-2012, 12:54 PM
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Re: DEI header wrap

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Originally Posted by okfirearms View Post
A quality stainless header shouldn't rust... eBay header probably would.
exept there arent quality headers like that what you have
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Old 03-12-2012, 01:01 PM
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Re: DEI header wrap

Hmmmm... not sure what "headers" I have... lol
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Old 03-12-2012, 01:15 PM
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Re: DEI header wrap

^ that "near oem design" tolds thats its no good... theyre everyone cheaply made
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Old 03-12-2012, 02:03 PM
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Re: DEI header wrap

I have two friends running a wrapped Megan header, both for over a year, no issues. Of course the naysayers will scream that you need a Vibrant or hytech rep or Mugen or some other godawful expensive header.. dollar signs equal horsepower. Stickers too. Wings are guaranteed 5-10hp. But I digress lol.
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Old 03-12-2012, 02:34 PM
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Re: DEI header wrap

^ well those megan/dc/ebay headers doesnt give you any horsepower, and usually theyre made of some cheap materials also... better to spend those money (or put half more) to proper pruducts which are made of good materials and are effective also

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Old 03-12-2012, 02:41 PM
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Re: DEI header wrap

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^ well those megan/dc/ebay headers doesnt give you any horsepower, and usually theyre made of some cheap materials also... better to spend those money (or put half more) to proper pruducts which are made of good materials and are effective also
Why can't we build our cars our own way? Why can't we all just get along? I didn't say your car or your parts suck.... Why the hate?
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Old 03-12-2012, 02:44 PM
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Re: DEI header wrap

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Why can't we build our cars our own way?
cant really call that "building" when you gain nothing there.. exept loosing little bit weight
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Old 03-12-2012, 03:40 PM
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Re: DEI header wrap

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some wraps just collect moist there and your header rusts more quickly
Doubt it.
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Old 03-12-2012, 06:12 PM
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Re: DEI header wrap

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cant really call that "building" when you gain nothing there.. exept loosing little bit weight
I guess that's your opinion and you're welcome to it. Ill just continue "not building" cars my way though. How did you build your motor? Id like to see your parts list with before/after dyno numbers so I can learn to "build" correctly
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Old 03-12-2012, 07:51 PM
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Re: DEI header wrap

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Originally Posted by Wolf95 View Post
i've done a header on a B series and I have my intake pipe wrapped on my lude. DEFINITELY WEAR GLOVES AND LONG SLEEVES!! fiberglass sucks!!

nice job. what'd you spray them with though?
So true. Even with gloves and long sleeves I managed to get awful itchy once I was done but the finished product looks amazing and I definitely feel a difference as far as under hood temperatures go.
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Old 03-12-2012, 09:59 PM
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Re: DEI header wrap

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So true. Even with gloves and long sleeves I managed to get awful itchy once I was done but the finished product looks amazing and I definitely feel a difference as far as under hood temperatures go.
I've always liked the look of a wrapped header, even back when I was building big block V8s. The improved underwood temperatures and better heat scavenging makes it a cost-effective way to improve performance.
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Old 03-13-2012, 03:07 AM
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Re: DEI header wrap

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I guess that's your opinion and you're welcome to it. Ill just continue "not building" cars my way though. How did you build your motor? Id like to see your parts list with before/after dyno numbers so I can learn to "build" correctly
stock with CAI and noname axleback 196hp
after 1st mods: CAI, dcrap-header, catco cat, skunk2 exhaust & IM, aem pulleykit, ported head - 224hp with chipped p28 ecu

some weight reduction (CF parts) & suspension upgrading after those + better injectors...

now finishing head build with skunk2 pro1 cams, valvetrain upgrade and vibrant's header...now the engine is kinda in pieces right now some valveseals gone and head is in the machine shop
but it SHOULD make something like 240hp-ish(?) *knocks the wood*

Last edited by TypeT; 03-13-2012 at 03:10 AM.
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Old 03-13-2012, 12:17 PM
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Icon7 Re: DEI header wrap

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Originally Posted by TypeT View Post
stock with CAI and noname axleback 196hp
after 1st mods: CAI, dcrap-header, catco cat, skunk2 exhaust & IM, aem pulleykit, ported head - 224hp with chipped p28 ecu

some weight reduction (CF parts) & suspension upgrading after those + better injectors...

now finishing head build with skunk2 pro1 cams, valvetrain upgrade and vibrant's header...now the engine is kinda in pieces right now some valveseals gone and head is in the machine shop
but it SHOULD make something like 240hp-ish(?) *knocks the wood*
Sounds like a realistic goal. Good luck bro!
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Old 03-13-2012, 08:32 PM
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Re: DEI header wrap

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Originally Posted by TypeT View Post
stock with CAI and noname axleback 196hp
after 1st mods: CAI, dcrap-header, catco cat, skunk2 exhaust & IM, aem pulleykit, ported head - 224hp with chipped p28 ecu

some weight reduction (CF parts) & suspension upgrading after those + better injectors...

now finishing head build with skunk2 pro1 cams, valvetrain upgrade and vibrant's header...now the engine is kinda in pieces right now some valveseals gone and head is in the machine shop
but it SHOULD make something like 240hp-ish(?) *knocks the wood*
you only gained 20 hp from all that?? Sheesh..
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Old 03-13-2012, 08:35 PM
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Re: DEI header wrap

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you only gained 20 hp from all that?? Sheesh..
I hope that's sarcasm lol
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Old 03-13-2012, 11:11 PM
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Re: DEI header wrap

@Wolf95, is that actual dyno numbers? sounds like a sick build, however im gonna go at least stage 2 when i save enough moolagh to build my head, is your ecu from hondata?
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Old 03-14-2012, 04:48 AM
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Re: DEI header wrap

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you only gained 20 hp from all that?? Sheesh..
hmph? there was just 2 things which actually give you something - that head and IM
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Old 03-14-2012, 06:51 PM
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Re: DEI header wrap

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I hope that's sarcasm lol
Lol yeah I'm just poking fun
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Old 03-15-2012, 01:20 AM
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Re: DEI header wrap

Hey im not attacking anyone or anything but does anyone have any dyno info or proof of the different headers because all I keep hearing is a friend had them and said they were crap but I am curious because I am about to purchase some and money is not an issue I just dont want to spend 800 on some headers that will only give a few extra HP VS 300-400 with a decent increase over stock I know the best increase would be a 4-1 but I'm no racecar driver
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Old 03-15-2012, 02:00 AM
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Re: DEI header wrap

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Hey im not attacking anyone or anything but does anyone have any dyno info or proof of the different headers because all I keep hearing is a friend had them and said they were crap but I am curious because I am about to purchase some and money is not an issue I just dont want to spend 800 on some headers that will only give a few extra HP VS 300-400 with a decent increase over stock I know the best increase would be a 4-1 but I'm no racecar driver
The whole exhaust system should work in concert to give any notable and repeatable gain in hp/torque.. in other words, you can't just slap on a header for an easy 5-10 hp without doing something about getting more air to the motor first (ie. intake, tb, im). Then, a good header paired with a good exhaust system and cat can actually net you something.

Many folks here on PZ will tell you that Hytech rep or Vibrant will be the best investment in the header department, even Mugen's header has its fans. Most here will downplay the value of DC or Megan and say they're just shiny OEM replacements, but they also have supporters who claim to get modest gains. In the end, its all about thinking about your intake and exhaust as a paired system and making your purchase decision based on dollars/horsepower whatever is most important to you. Also, the folks who spend 800-1200 for a header end up wasting their money if they don't build the whole system around it.

In my case, I went with a Megan header for the time being. While it may only gain me 1-3hp vs. a Hytech or Vibrant's 6-10hp, I chose to spend more time and money right now on building the intake system (68mm tb, port matched intake mani, head port/polish, valves/springs/retainers, stage 2 crower cams) and the exhaust post header (hi-flow cat, Greddy Ti-C catback). If I want to upgrade it to a Hytech rep later I will, but its not on the list of priorities at the moment.

Biggest piece of advice I would give you: set a REALISTIC goal of a hp/tq number that you want to hit. Do the research and ask questions, but build your car your way. This is an individual sport and we all have different tastes and different opinions... but at the end of the day, if you're happy with a DC header, get it. If you must have the Mugen, go for it. There's plenty of ways to skin a cat.
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Last edited by okfirearms; 03-15-2012 at 02:07 AM.
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