As far as I know
4-1 - works better for hi revolutions
4-2-1 - for low and mid....
Our 20sed anbd 22sed are week at hi revolution but we already add the pulley, the intake and throttle so probably we already have a better hi range.
Any opinion
header 4-1 vs 4-2-1 for 20sed and 22sed
Moderators: daewoomofo, Moderators Group
header 4-1 vs 4-2-1 for 20sed and 22sed
People we will make a couple of header soon. But now I'm not sure wich one will be better for our n/a engines. Most of the headers on the speed shops are 4-2-1 but some people say that the 4-1 is better.
As far as I know
4-1 - works better for hi revolutions
4-2-1 - for low and mid....
Our 20sed anbd 22sed are week at hi revolution but we already add the pulley, the intake and throttle so probably we already have a better hi range.
Any opinion
As far as I know
4-1 - works better for hi revolutions
4-2-1 - for low and mid....
Our 20sed anbd 22sed are week at hi revolution but we already add the pulley, the intake and throttle so probably we already have a better hi range.
Any opinion
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PoTsUrFrIeNd
- Posts: 46
- Joined: Wed Mar 08, 2006 3:06 am
4-2-1 is best
I made a custom made 4-2-1 header for my daewooo racer and believe you me it was found to be the best thing i ever did you can well imagine the torque increases i have by this statement " My front tyres keep on spinning on a stand still when i pump up the accelreator"so i recon a horsepower increase of about 10 i guess but loads of torque
4-2-1 rules
4-2-1 rules
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daewooluvr
- Expert
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- Location: York, PA
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Re: 4-2-1 is best
AGREED...zingy wrote:4-2-1 rules
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pavlozky
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Remember guys that the performance of a header depends on the car engine, there is not such thing like the "perfect" header.
some may say that 4-2-1 (One or two Pice) Rules. others 4-1 one piece rules. Othes Stainless or Ceramic Coated or etc...
Always the Dyno test will be diferent even if its the same Car and model....
some may say that 4-2-1 (One or two Pice) Rules. others 4-1 one piece rules. Othes Stainless or Ceramic Coated or etc...
Always the Dyno test will be diferent even if its the same Car and model....
Lanos King Rules!
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PoTsUrFrIeNd
- Posts: 46
- Joined: Wed Mar 08, 2006 3:06 am
when the time comes i will be doing a 4-1 header with a 2 inch collector
and equal length long tubes
for me their si no need for TQ i allready got mine (148tq)
but the fact that from 4500 rpms to red line aur power curve dies it really jurts performance
if we get a flat or increasing power band after 4500rpm the cars will move much better
thats why we need short-rams intake sucking cold air and 4-1 headers
and equal length long tubes
for me their si no need for TQ i allready got mine (148tq)
but the fact that from 4500 rpms to red line aur power curve dies it really jurts performance
if we get a flat or increasing power band after 4500rpm the cars will move much better
thats why we need short-rams intake sucking cold air and 4-1 headers
Mitsubishi Eclipse GST 304whp 319tq @22psi w EVO 3 16G Daily Driven
DAEWOO Nubira 2.2L Turbo 217whp 204tq @13psi SOLD
a Too ugly Question
I know that is my question will get you back to the begining
what is meant by 4-2-1 or 4-1???
what is meant by 4-2-1 or 4-1???
4-2-1 is where the 4 exhaust outlets are combined into 2 pipes and then those 2 are combined into one pipe.
a 4-1 setup is kinda like the OEM one... all 4 pipes combine into one pipe.
MMamdouh
a 4-1 setup is kinda like the OEM one... all 4 pipes combine into one pipe.
MMamdouh
Driving is the utmost fun you can have with your pants on!
Check out my ride: http://www.cardomain.com/ride/567267
Check out my ride: http://www.cardomain.com/ride/567267
I was talking with el Junito, about all the opinons here. I think I will go with the 4-2-1. Why? No mater if our cars die at hi rpms. the time that the car is between 4 to 6.5 is minimum. I think I will prefer hi power between 1 to 4.5. So I will get a better reaction as soon that I press the gas pedal. Well is my opinion. We also talk about make one of each one to prove both in a dyno, but that gonne be too expensive.Nubira2.2 wrote:when the time comes i will be doing a 4-1 header with a 2 inch collector
and equal length long tubes
for me their si no need for TQ i allready got mine (148tq)
but the fact that from 4500 rpms to red line aur power curve dies it really jurts performance
if we get a flat or increasing power band after 4500rpm the cars will move much better
thats why we need short-rams intake sucking cold air and 4-1 headers
Also base in the dyno test of chris car with the 360D pulley I never go over 6rpm before shiting because I see the lose of power there.
**PoTsUrFrIeNd**
Any lanos header can fixt in the aveo. El junito make a modification to a civic b16 header, And because he will swap to a t20sed angine he is selling it. Must weld the conector to the exaust pipe but is %90 ready. He will give it as the smae cost that he buy it. I think was 100.00
Does switching to a 4-2-1 on a Lanos 1.6 DOHC improve it's low end torque too?
Last edited by JohnnyC on Sun Apr 30, 2006 5:47 pm, edited 1 time in total.
