Hey all, well as some of you know a B20 has alot of low end power, very torquey. Well my question is, would a 4-1 header that should offer better high end work better than a 4-2-1 header that is better low-mid power on my nonv-tec setup, because I've been told that the high end is where I should focuse on. Is this right? Would a 4-1 be better? Any suggestions or opinions would be greatly appreciated..

 

421 jdm itr header

 

it might help if you tell us if your running b20/vtec or non vtec. maybe even tell us what you want your car to be best at? 1/4th mile autoX etc etc

 

hey cory umm in the middle of my umm question it says umm" my nonv-tec setup" but thanks for lookin anyways i'm lookin for 1/4 mile performance.

 

my bad....lol, better learn to read again! yes the 4-1 should work better for 1/4 mile. though it has to be sized right. i'm saving my money for a hytech 2.5" id system cause my future plans are pretty out there and i'll need it then. a 2.5od header is probably big enough if you dont' plan on 404s or 405s. a 2" is way to small. and plan on getting a bigger exhaust if you have 2.25od exhaust...i had a type r exhaust. and was barely better than my stock 2" od. in fact i'm actually faster down the track right now with the stock exhaust

 

thanks for the input cory, i think i have a 2.5 exhaust on the hb. if i was going to use 405s(i'm assuming you mean cams) then would i need a 4-2-1?

 

no, if you got 405's ud just really need a 2.5" exhaust system to flow taht much air in a 2L engine.
the 4-2-1 will give you less high end and more low end in any situation. whether or not you have agressive cams or a stock setup.

 

so on my setup a 4-1 might work for me? Even though it will take away for the low end(which wouldn't really be a bad thing due to keeping traction problem when i launch) it would help out my top end? Would cam gears enable me to even out both low and high ends?

 

anyone else have any advise?

 

I will be running a 4-1 in my all motor LS, hit me up at the end of the month and hopefully it will be up and running and Ill tell you how it went

 

yeah lmk what you think, seems to be alot of 4-1's for sale so asap info if you pleeze