What is the difference or which is better between (4 INTO 1 ONE PC.), (4-2-1 ONE PC.), (4-2-1 TWO PC.)? If you could please help me out on this one, that would be koo!!! Thanks HT Members!!!

 

4-2-1 is for mid-high end power, 4-1 is for more high end power.
4-2-1 is usually better for daily driving as well.

This is what I found from searching.

as for the 2 or 1 piece, the only difference is that the 2 piece is A LOT easier to install.

 

4-1 headers will give more mid to top end horse power but will lack in torque on the bottom end. 4-2-1 headers are much like the OEM manifold but with more flow. It's a comprimise of low end torque or top end power. The 4-1 headers will have less ground clearance than the 4-2-1. I myself have a 4-1 jdm like the Type R's.

 

Header. Single...YOu don't have a V motor,its an inline 4 cylinder. That would be "header" not "headers" wich is plural. D'oh

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 99Geeezer &raquo;</TD></TR><TR><TD CLASS="quote">4-1 headers will give more mid to top end horse power but will lack in torque on the bottom end. 4-2-1 headers are much like the OEM manifold but with more flow. It's a comprimise of low end torque or top end power. The 4-1 headers will have less ground clearance than the 4-2-1. I myself have a 4-1 jdm like the Type R's. </TD></TR></TABLE>

while this may hold true for many headers, a good tri-y design will have the midrange of a 4-2-1 and the topend of a 4-1. but these headers are considerably more expensive.

 

just how most people listed above

4-2-1 for more torque and 4-1 is better for top end power.

 

which one would you guys reccomend??? I would like to get the best performance for my car.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IntegraDOHCter &raquo;</TD></TR><TR><TD CLASS="quote">Header. Single...YOu don't have a V motor,its an inline 4 cylinder. That would be "header" not "headers" wich is plural. D'oh</TD></TR></TABLE>

yeah smart guy. instead of being an *** and trying to correct the guy, why dont you just answer the question at hand..?
not to mention, he is referring to more than 1 type of header, thus being PLURAL.

back on question, which is better? they both have advantages.. depends on what YOU are looking for.

 

not trying to jack.....but what makes the difference in tq and hp difference , how does the exhasut going through another flange really make the difference on low and top end?

 

i would go 4-1 just because i have a vtec motor for more high end.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95tealteg &raquo;</TD></TR><TR><TD CLASS="quote">not trying to jack.....but what makes the difference in tq and hp difference , how does the exhasut going through another flange really make the difference on low and top end?</TD></TR></TABLE>

piping lengths, diameters, collector size, cylinder pairing, all have an impact. that is why a custom header will make more power than an OTS like dc.

http://www.team-integra.net/se...eID=2

 

type r header+vtaaack ftw

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nicks95GSR &raquo;</TD></TR><TR><TD CLASS="quote">which one would you guys reccomend??? I would like to get the best performance for my car.</TD></TR></TABLE>

Hondas dont make torque. Never have, probably never will. Especially B/D motors. Might as well go 4-1. Although, you may never realize the gains if you have a non VTEC. So maybe you'll just lose out on whatever bottom end you have, and not make up for it ever. So basically:

B16A/B16B/B18C1: 4-1

Non VTEC/ls vtec (with 7k redline): 4-2-1

EDIT: i see you name suggests you have a 95GSR. Go 4-1. and everyone thats going to say "well, what about daily driveability blah blah"...You will lose 2 lb of torque low end to make up for it greatly in high end. You wont notice a drop in "daily driveability" and you're buying a header to drive fast (which means top end)...not to go to the grocery store.

 

Its also going to depend on how dumped your car is. Most of the time, a 4-1 header will hang lower for longer runners.

 

Another quicj question... If I get the JDM Type R or USDM Type R header will my car still pass smog?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blu99teg &raquo;</TD></TR><TR><TD CLASS="quote">Its also going to depend on how dumped your car is. Most of the time, a 4-1 header will hang lower for longer runners. </TD></TR></TABLE>

You've just gotta put on your man pants. Observe how low my vehicle with a 4-1 was:

 

4-1 or 4-2-1 it doesnt matter. i still dont feel a damn thing with these headers. i rather save 300 bucks and stick with my stock 1

 

You wont really notice a difference in horsepower with better headers until you do some actual work on the engine... id recommend spending your money on that first..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IntegraDOHCter &raquo;</TD></TR><TR><TD CLASS="quote">Header. Single...YOu don't have a V motor,its an inline 4 cylinder. That would be "header" not "headers" wich is plural. D'oh</TD></TR></TABLE>


You're an ***.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nicks95GSR &raquo;</TD></TR><TR><TD CLASS="quote">What is the difference or which is better between (4 INTO 1 ONE PC.), (4-2-1 ONE PC.), (4-2-1 TWO PC.)? If you could please help me out on this one, that would be koo!!! Thanks HT Members!!!</TD></TR></TABLE>

As for 4-1 VS. 4-2-1 ... Unless you have soem work done it wont make much of a difference... as stated before, 4-1 in theroy will give you more top end, and 4-2-1 will give you more "torque" down low.

As for a 4-2-1 ONE PIECE vs. 4-2-1 TWO PIECE, I'd go wiht the one piece simply because in the past I've have a problem with the gasket between the two pieces blowing out. Yeah, its harder to install a one piece - but its one less place your exhaust could leak from - PLus I think it looks better from the engine bay... same price in most cases too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tonyl507 &raquo;</TD></TR><TR><TD CLASS="quote">

As for 4-1 VS. 4-2-1 ... Unless you have soem work done it wont make much of a difference... as stated before, 4-1 in theroy will give you more top end, and 4-2-1 will give you more "torque" down low.

As for a 4-2-1 ONE PIECE vs. 4-2-1 TWO PIECE, I'd go wiht the one piece simply because in the past I've have a problem with the gasket between the two pieces blowing out. Yeah, its harder to install a one piece - but its one less place your exhaust could leak from - PLus I think it looks better from the engine bay... same price in most cases too.</TD></TR></TABLE>
what he said! i have greddy 4-2-1 one piece and they're nice but if i could do it again i wouldnt have gotten a header and put it toward a turbo manifold.

 

Thanks 4 da info!!!