Orite heres my dilema, I've heard from a few ppl that a 4-1 header is best for my engine if i want more power after vtec, but 4-2-1 is better for before vtec is this true??? (my engine is a b16a2, and i have a full mongoose exhaust, de'cat and induction kit) I was perfectly happy 2 believe this untill a local tuner told me 4-2-1 was better power for after vtec, i dont know how good his tuning is though he has tuned my freinds 2003 type r civic (header,exhaust,hondata ecu, induction kit) and its still not as quick as id expect!! i wouldnt take my car there anyways!!!
thanx 4 any help

 

I would do the type r 4-1 header.

 

a conventional 4-1 design will help more in the higher rpm range, a 4-2-1 in the low-mid range. but with a lot of the new hybrid 4-2-1 headers now available you can have the best of both worlds. just depends on how much you want to spend.

 

Can't tune hehe.. And No.. 4-2-1 is to make up your low end without that vtec.. if your goin to get a 4-1 header dont piss out, get a 2.5 exhust believe it or not making your engine breath better helps alot man.. it does..

 

Thanx 4 all da help, i thought it woz best to go for a 4-1. i didnt know about the hybrid headers, wer can i get one of these from? and how much are they?? i already have a 2 1\4 full mongoose exhaust system and de-cat so ill try the manifold on that b4 i change the exhaust, it all depends on what gains i get. thanx agen 4 da help!

 

www.hytechexhaust.com
www.sms-products.com

prepare to spend $$$ for one of those