ELGUY

Hi guys, I'm wondering about a header for a b16 2nd gen. Is the 4-1 too peaky for a daily driver/track car? should I go with a 4-2-1? considering equal quality. Or should I just stay with the stock SIR manifold? Thanks

imported_supragino

4-2-1 cuz u need more torque on that car than anything

so Vibrant J-spec

imported_360_vortex

i heard toda 4-2-1 header yield good results on b16

ELGUY

Thanks guys, 4-2-1 it is. Ive got a line on a 4-1 but it sounds too peaky for that engine, which is all top end as it sits. Thanks. Ryan

imported_mikepasini

actually, 4-1 would make some nice top-end power... honestly, look into the vibrant j-spec... ask zeeman, he uses them and loves them... they are somewhat in between a 4-2-1 and a 4-1... the pipe turns from 4 to 2 after the first bend and then the 2 pipes turn into 1 and then it has a 2.5" collector..

imported_InVaDeR_HB

IMO just grab something cheap, DC or Vibrant as the gains are not very impressive. Unless you are building a NA setup it wont make too much difference....

In all realisticness and being generous
a DC might make 5 whp and a Toda 6-8 whp is an extra $800 worth 1-3whp?

imported_plzbeleiveit

uisng 4-2-1 jspec vibrant its awsome.

imported_My93Civic

if its just straight bolt on, no biggie modifications/tuning, just get a cheap one from ebay.

zeeman

iTrader: (1)

well any header with a 2.5" collector you will have to get a cat with a 2.5" inlet, or some sort of reducer (i think vibrant sells one) so that it fits into the factory cat.
The vibrant j-spec is a great header for the price. But don't expect huge gains, unless you spent $1200 US on a custom one, but still you'll need a free flowing (at least 2.25" preferrably 2.5") exhaust.

imported_plzbeleiveit

my exhaust is a 2.25, my outlet for the head is a 2.5 i bought a 2.5 flange and welded it to the cat work fine.

Nova_Dust

4-2-1 with 2.5" collector.