4-1 headers vs 4-2-1 ?
09-28-2003, 07:19 PM
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4-1 headers vs 4-2-1 ?
Hey guys i have 4-2-1 headers on my car it seems to loose power up top on the high way , anyone have the 4-1 on their car and how is the performance . Ihave an 95 ex motor
09-28-2003, 08:39 PM
#6
Re: (rjardy)
The known facts:
4-1: Provides better top end power with the sacrifice of low end power/torque
4-2-1: Provides better low end-mid range power while sacrificing top end power
Some of the more expensive headers like SMSP and Hytech have created 4-2-1 designs which create the best of both, but are very pricey. You just have to shop around.
More or less on a budget, if you're rev'n past 6500 then go 4-1, because in a race or on a dyno, youre going to need the power up top. If not, then go 4-2-1 to make better torque down low since the high end is un-available. Its more of a personal decision as to which way this debate can go. Personally it gave me a headache just typing this
4-1: Provides better top end power with the sacrifice of low end power/torque
4-2-1: Provides better low end-mid range power while sacrificing top end power
Some of the more expensive headers like SMSP and Hytech have created 4-2-1 designs which create the best of both, but are very pricey. You just have to shop around.
More or less on a budget, if you're rev'n past 6500 then go 4-1, because in a race or on a dyno, youre going to need the power up top. If not, then go 4-2-1 to make better torque down low since the high end is un-available. Its more of a personal decision as to which way this debate can go. Personally it gave me a headache just typing this
09-28-2003, 08:44 PM
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Re: (Echo7847)
I have a dc 4-2-1 header in my d16z6 and I have no complaints. 
honestly...I didnt notice a real big gain with the header, I mean..I only have intake and exhaust anyways..but hey, its better than having stock header.
honestly...I didnt notice a real big gain with the header, I mean..I only have intake and exhaust anyways..but hey, its better than having stock header.
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09-28-2003, 08:58 PM
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Re: 4-1 headers vs 4-2-1 ? (blackccoupe)
I have a DC 4-1 header on my mighty D16Y7 along with the stock catback. I must say it sounds like ****; like an enraged bumblebee. It's drives better than with the stock pos though.
09-28-2003, 09:17 PM
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Re: 4-1 headers vs 4-2-1 ? (NOSpeed97)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NOSpeed97 »</TD></TR><TR><TD CLASS="quote">I have a DC 4-1 header on my mighty D16Y7 along with the stock catback. I must say it sounds like ****; like an enraged bumblebee. It's drives better than with the stock pos though.</TD></TR></TABLE>
oh yea? after installing my 4-2-1, I loved the way my car sounded. what kind of exhaust do you have?
oh yea? after installing my 4-2-1, I loved the way my car sounded. what kind of exhaust do you have?
09-28-2003, 10:05 PM
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Re: 4-1 headers vs 4-2-1 ? (WongFeihung)
go to team-integra.net and look through the article about headers by MD, he is a ******* genious. That will answer all your questions and rip you a new ******* at the same time 
09-28-2003, 10:32 PM
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I have DC 4-2-1 w/stock exhaust...no difference off the line, 60-90 pulls much smoother than before. 4-1 headers wouldn't really help a mostly stock d series, the motor doesn't rev high enought to get any kind of benefit. 4-1 headers also have ground clearance issues...if you're lowered, you'll prolly scrape a lot.
09-28-2003, 10:53 PM
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Re: 4-1 headers vs 4-2-1 ? (WongFeihung)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WongFeihung »</TD></TR><TR><TD CLASS="quote">
oh yea? after installing my 4-2-1, I loved the way my car sounded. what kind of exhaust do you have?</TD></TR></TABLE>
My brother has a 4-2-1 one as well, made by DC. Mine is a 4-1. I must admit his car sounds better than mine. My exhaust is stock.
oh yea? after installing my 4-2-1, I loved the way my car sounded. what kind of exhaust do you have?</TD></TR></TABLE>
My brother has a 4-2-1 one as well, made by DC. Mine is a 4-1. I must admit his car sounds better than mine. My exhaust is stock.
09-28-2003, 11:09 PM
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Re: (blackccoupe)
Just last week I installed my DC 4-2-1 as well as a Tanabe SRM, and I was shocked at the difference in my performance.
I still need to reset the ecu to see if that has any impact.
I decided to go with a 421 for a couple of reasons..1. D16z6, I never rev up to 7k, 2. my car is lowered with springs, so a 4-1 would scrape 3. Low-Mid Range boost, I mainly drive between 35-55 mph, stop and go, so this works for me.
-D
I still need to reset the ecu to see if that has any impact.
I decided to go with a 421 for a couple of reasons..1. D16z6, I never rev up to 7k, 2. my car is lowered with springs, so a 4-1 would scrape 3. Low-Mid Range boost, I mainly drive between 35-55 mph, stop and go, so this works for me.
-D
09-30-2003, 04:33 PM
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Re: (eg6h8k)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eg6h8k »</TD></TR><TR><TD CLASS="quote">i got a 4-2-1..cuase i do alot of stop and go traffic...good ****....i would like to try an 4-1 though see is theres any diffs...?</TD></TR></TABLE>
yeah you only use the added tq. from the 4-2-1 in 1st gear thats it, after that you are 4-5k++ you don't use it so that is why I got the 4-1 for top end!
yeah you only use the added tq. from the 4-2-1 in 1st gear thats it, after that you are 4-5k++ you don't use it so that is why I got the 4-1 for top end!
10-01-2003, 10:20 AM
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Re: (Echo7847)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Echo7847 »</TD></TR><TR><TD CLASS="quote">The known facts:
4-1: Provides better top end power with the sacrifice of low end power/torque
4-2-1: Provides better low end-mid range power while sacrificing top end power
</TD></TR></TABLE>
I have dc 4-2-1 header...low-mid improved and the top end pulls "as strong" (hehe 4 banger) as it ever did.
????????
4-1: Provides better top end power with the sacrifice of low end power/torque
4-2-1: Provides better low end-mid range power while sacrificing top end power
</TD></TR></TABLE>
I have dc 4-2-1 header...low-mid improved and the top end pulls "as strong" (hehe 4 banger) as it ever did.
????????
10-01-2003, 10:35 AM
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Re: 4-1 headers vs 4-2-1 ? (blackccoupe)
4-1 headers allow more top end flow, while 4-2-1 allow alot of midrange with not as much gain on the top end. 4-1 is generally better for a honda because they are not known for being torque monsters, but for revving to hell and back. I would say get a 4-1 one. The only thing better i would suggest is getting a 4-2-1 with a very short 2 section and a 2.5 inch collector. That would be you best option to get the best of both worlds.....But very pricy
10-01-2003, 10:36 AM
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Re: (blackccoupe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackccoupe »</TD></TR><TR><TD CLASS="quote">howmany of y guys scrape ur headers and is it bad?</TD></TR></TABLE>
yeah i wanna know too...i hear alot of people saying that the DC 4-1 will scrape everywhere. how bad is it really?
yeah i wanna know too...i hear alot of people saying that the DC 4-1 will scrape everywhere. how bad is it really?
10-01-2003, 11:56 AM
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Re: (Dj Villain)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dj Villain »</TD></TR><TR><TD CLASS="quote">
yeah i wanna know too...i hear alot of people saying that the DC 4-1 will scrape everywhere. how bad is it really?</TD></TR></TABLE>
Yes it's very bad..I already have several bumps in mine and some scrathes..And my car is not lowered very much (35mm) ..It's a good header,but it hangs way too low
yeah i wanna know too...i hear alot of people saying that the DC 4-1 will scrape everywhere. how bad is it really?</TD></TR></TABLE>
Yes it's very bad..I already have several bumps in mine and some scrathes..And my car is not lowered very much (35mm) ..It's a good header,but it hangs way too low
