Slow_import

as the title states, which header would yeild more power on my 00 si, the stock 00itr header or the dcsport 4-1 header....i tried searching about this but all i could find was info on the jdm 4-1 itr header....thanks for any input....

sol2hatch

your not going to notice a big power difference with bolt ons. not saying they are worthless, but I dont know that you will notice. And DC sports headers are kind of cheap. I have one on my car, and it is ok, but nothing special, and it is really thin metal. It is holding up fine for over a year though.

SkoundrelUSA

The JDM 4-1 ITR.

just Touge

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sol2hatch &raquo;</TD></TR><TR><TD CLASS="quote">your not going to notice a big power difference with bolt ons. not saying they are worthless, but I dont know that you will notice. And DC sports headers are kind of cheap. I have one on my car, and it is ok, but nothing special, and it is really thin metal. It is holding up fine for over a year though. </TD></TR></TABLE>

I would go with the ITR over DC. If you want a quality header for B-series at a low price, I suggest a Greddy. They run about $300 and you will notice the power increase. It really makes a difference with other bolt ons and mods as well. If your planning on future mods, an ITR or "quality" aftermarket is you best bet.

Slow_import

i'm not expecting to gain alot, but just wondering which header would flow better, i have the dcsport 4-1 right now, and could pick up a usdm 4-2-1 header for 140 bucks, just wondering if its a upgrade, or down grade from the 4-1 header

SkoundrelUSA

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slow_import &raquo;</TD></TR><TR><TD CLASS="quote">i'm not expecting to gain alot, but just wondering which header would flow better, i have the dcsport 4-1 right now, and could pick up a usdm 4-2-1 header for 140 bucks, just wondering if its a upgrade, or down grade from the 4-1 header</TD></TR></TABLE>

huge downgrade and rip-off if you're talking about the stock cast iron exhaust manifold.

Slow_import

i dont get it, some say to do it and some say to not, i heard the 00 itr has a 2inch collector, the dcsport one i have i believe is only 1.78 or something like that....so again as the title states, itr 4-2-1 header, or dc sports 4-1 header, which flows better and will yeild more power in the long run

92'si

itr &gt; dcsports

SkoundrelUSA

alright let me put it in picture form

if its like this:



no don't get it. It wont do anything

but if its like this:



yeah

Slow_import

so pretty much the dc sport header is better all around than the stock usdm itr header...just curious b/c some people have been telling me its worth the money and some says its not...

mr abstract

i have the 98 spec 2.5'' 1-piece itr header on my b16 and i love it. ive heard bad things about the dc header, like crackin welds and what not. that was one of the reasons what pushed me to get the itr header.

B16b-EJ8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slow_import &raquo;</TD></TR><TR><TD CLASS="quote">so pretty much the dc sport header is better all around than the stock usdm itr header...just curious b/c some people have been telling me its worth the money and some says its not...</TD></TR></TABLE>

I think some are confused by what you are saying...the USDM ITR header is trash...the 98+ "JDM" ITR header is the one that is good. I think they are confusing the two and thats why you are getting conflicting information. So yes the DC will be better than the USDM ITR header but NOT the JDM ITR header.

walker111

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mr abstract &raquo;</TD></TR><TR><TD CLASS="quote">i have the 98 spec 2.5'' 1-piece itr header on my b16 and i love it. ive heard bad things about the dc header, like crackin welds and what not. that was one of the reasons what pushed me to get the itr header.</TD></TR></TABLE>

You obviously didnt read the thread. He's not talking about the JDM ITR header. He's talking about the crappy USDM cast exhaust manifold. Like I said in the ITR thread, keep what you got, keep saving for a good header......TODA, SMSP, HYTECH.,......

mr abstract

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by walker111 &raquo;</TD></TR><TR><TD CLASS="quote">

You obviously didnt read the thread. He's not talking about the JDM ITR header. He's talking about the crappy USDM cast exhaust manifold. Like I said in the ITR thread, keep what you got, keep saving for a good header......TODA, SMSP, HYTECH.,......</TD></TR></TABLE>

i was just giving my opinion in what i heard about dcs and what i chose to get. and yes, toda are a good header (dont ahve experience with smsp or hytech) for $1k and also are the jdm itr for $400. the toda header may give you 2 or 3 more hp but teh jdm itr does jsut as well. you just dont get hte "toda" name

SkoundrelUSA

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mr abstract &raquo;</TD></TR><TR><TD CLASS="quote">
you just dont get hte "toda" name</TD></TR></TABLE>

Absolutely not. Depending on what build you have, a Toda header could annihilate the ITR

mr abstract

i take back my previous statement. you are correct..it depends on the build. i was talkin about straight header for header by itself without anything else.

walker111

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mr abstract &raquo;</TD></TR><TR><TD CLASS="quote">

i was just giving my opinion in what i heard about dcs and what i chose to get. and yes, toda are a good header (dont ahve experience with smsp or hytech) for $1k and also are the jdm itr for $400. the toda header may give you 2 or 3 more hp but teh jdm itr does jsut as well. you just dont get hte "toda" name</TD></TR></TABLE>

I never said that the JDM 4-1 Header was bad, in fact I think its a great header. BUT, what I did say is that he isnt talking about the 4-1, he's talking about the 4-2-1 exhaust manifold. The OP asked about an apple and an orange, you came in talking about a pear and some negative feedback on the orange. The negative feedback about the orange is good info, the reference to the pear was not.

If that was the case I'd say:

I have the toda, its an awesome header, one of the best!!! The stock usdm cast manifold is heavy waste of money. I've heard that it doesnt make any power over any other manifold.

Slow_import

thank you, i'm guess i'll just wait till i got enough money for a better header....thanks for all the help guys....

Han Solo

i didnt really read the thread, but to let u know both headers suck. the best Cheap header is the Edelbrock, however if ur doing an NA build save up for a Toda, RMF, DTR, SMSP, Hytech, etc etc.

n2odelsol

i love headers

AP1_man

I remember reading Super Street a few months ago and they had a comparison with the DC header, USDM ITR header, and JDM ITR header. They Dynoed each header and the USDM produced more power, as the DC headers they used were all about the same. When they used the JDM ITR header they didn't even post the loss of power. It explained that since the JDM ITR header is 4-1 and 2.5 in on a normal motor with about stock power and compression there is not enough backpressure and you lose power and torque. The USDM in my opinion would be your best bet put one on my friend 01 gsr and noticed a difference over his 4-1 header w/2.5. But this is all what i gathered from reading and experience. If there is something i left out and needs correction that would be great.

But I got RSR 4-2-1 2.225in header...love it

blacksi93

i have the DC 4-1 and like it, i do though want the ITR and understand that both are the same pretty much as far as being less restrictive than stock, but i went with the DC because its lighter...i know not by much but every bit counts