i was just wondering why dc headers r so bad cuz everyone says they suck and **** so wondering why they suck and if anyone has actually horsepower it will give?

 

Bascially DC didn't do any R&D on it and built from B series designs...it's not much better than stock

 

unless you modify it..i did and i noticed considerable gains.

 

So why dont you just modify stock ?

 

because there are better headers to modify or you can just buy a good one from the beginning...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">Bascially DC didn't do any R&D on it and built from B series designs...it's not much better than stock</TD></TR></TABLE>

sucks how many many and many companies/jdm companies make b-series engine parts but not that many makes them for the h-series.

 

how well are they for the f22? still same lame results?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pr0jektLude &raquo;</TD></TR><TR><TD CLASS="quote">how well are they for the f22? still same lame results?</TD></TR></TABLE>

i actually think they are a good mod for the f22. my friend has a S model and i saw his 4-1 stock header.

 

people just say they are bad because they look like the stock piece...i did notice a difference upon installation, and even more different after modifying it, but most people would rather spend the $300 new elsewhere

 

because the stock headers are good enough

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dawalude &raquo;</TD></TR><TR><TD CLASS="quote">people just say they are bad because they look like the stock piece...i did notice a difference upon installation, and even more different after modifying it, but most people would rather spend the $300 new elsewhere </TD></TR></TABLE>

they do?


i wouldnt spend $300 on a new DC header, but $150 for a used one didnt sound bad.

 

i have heard that the dc's are crap too. i wanted to know what you guys mean by "modifying" them. i have never heard of that be4. BTW i have a 5th gen lude.

 

modifying meaning to change the bottom part of the header to bigger piping....

 

changing the "collector" of the header.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">Bascially DC didn't do any R&D on it and built from B series designs...it's not much better than stock</TD></TR></TABLE>

Wrong again...

Misinformation posted by Joel, case # 54784645

 

how come almost every set of DC headers have the same sized primaries...on 1.5 liter, 1.6 liter, 1.8 liter, 2.0 liter and 2.2 liter engines?

and how come the tech guy at DC told me on the phone that a JDM oem header is probably better.....?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">how come almost every set of DC headers have the same sized primaries...on 1.5 liter, 1.6 liter, 1.8 liter, 2.0 liter and 2.2 liter engines?

and how come the tech guy at DC told me on the phone that a JDM oem header is probably better.....?</TD></TR></TABLE>

couldnt tell you why he would have recomended a JDM 4-1 over a DC... I mean, its probably going to be better than the carb legal versions they offer but their version of the JDM 4-1 has been known to make a couple more ponies than the OEM unit...

The reason the primaries are the same is because first and formost they want the header to be carb exepmt, restricting primary size is a good way to keep emissions in check... The puny collector is another way they were able to please the carb gods...

 

whats all this talk abotu 4-1 headers?
what car comes with a JDM 4-1 and an h22a?
hell what header by DC is a 4-1 for the h22a??

 

4-1 headers give top end power. B18C (ITR) came with a 4-1 header. I don't think there is a jdm 4-1 for the h22a...

there is no 4-1 header for the h22a from DC i believe.

 

it has to do with the piping diamater the primary length secondary length and how good the collector is a person cna make the stock or dc header a real good header

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kal &raquo;</TD></TR><TR><TD CLASS="quote">4-1 headers give top end power. B18C (ITR) came with a 4-1 header. I don't think there is a jdm 4-1 for the h22a...

there is no 4-1 header for the h22a from DC i believe.</TD></TR></TABLE>


thats all fine and dandy for integras...but this is the lude forum
ill take larger porimaries and larger secondaries any day...and the JDM OEM parts have all that over teh DC...the only thing that the DC has better is cleaner merges.

 

i was just answering your question, didn't say i prefer to have high end power

 

yeah but i am jsut saying tha tcomparing a header from a different series of engine is besides the point...

anyway i have several sets of H22A headers....3 JDM, one set of ractive, one set of DC, and one set of some sort of knockoff.

the DC has longer smaller primaries and much cleaner merges. the OEM units have larger piping everywhere. some time with a grinder can clean up the merges a LOT....the usdm headers are slightly smaller but still larger piping than the DC header.

i personally DONT beleive that DC put much effort into research for the h22a headers. in fact i suspect they jsut make a ine size fits all header.

 

just get SMSP and call it a day.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rick Solis &raquo;</TD></TR><TR><TD CLASS="quote">The reason the primaries are the same is because first and formost they want the header to be carb exepmt, restricting primary size is a good way to keep emissions in check... The puny collector is another way they were able to please the carb gods...</TD></TR></TABLE>
I highly doubt that. Most Prelude owners can tell you that it's not hard to pass emissions with an aftermarket header (ignoring other mods). Designing an exhaust header around an emissions requirement seems a little silly. In addition, I have amassed quite a collection of books on engine theory, and not one ot them asserts that header design affects emissions values. I admit there is probably some relationship, but it would have more to do with affecting cylinder burn quality than anything else.

In this case, I would use the old phrase "Never attribute to malice what can be adequately explained by stupidity." Therefore, it is more likely that DC sports are a bunch of retards than the possibility used small primaries and collectors for emissions. Hell, the people buying them aren't terribly concerned with emissions anyway if they are buying an aftermarket header.

My vote goes with Joel on this one, regardless of your dislike of him.