Rep Power: 258

i see a lot of ppl saying the basic set up for any civic in, intake, exhaust and headers. i know what headers r, but what difference does performance ones do? bigger, more flow?

 
Rep Power: 289

They have bigger "runners" for increase flow!!

 
Rep Power: 0

A header increases and eases exhaust flow by allowing more exhaust to pass through (bigger runners) and by easing the flow of exhaust gases; the exhaust isn't cramped into tight curves and tiny passages, but can flow through nice, sweeping curves, much like an aftermarket exhaust does.

 
Rep Power: 258

ok cool, but then, for it to be affective, ud also need to change your entire exhaust line, correct?

 
Rep Power: 334

no, but it'd benefit you most with an exhaust with the same corrected piping size as well.

think of it as the header = the fries
the exhaust = burger

they go very well together.

 
Rep Power: 289

A good analogy!!!

 
Rep Power: 0

What kind of increases can you expect with our cars? Is the flow of exhaust a limiting factor on a stock engine? I've seen some other threads about exhast where folks say something along the lines of "don't waste your money", etc.

 
Rep Power: 0

I'm not trying to say that modding is not fun, on the contrary, the only thing stopping me from pimping my Civic out is that pesky money issue. I was just wondering what kind of gains one might expect for the money.

 
Rep Power: 289

^^Dont expect to be fast in your civic without a swap, FI, or Both!! I/H/E in our cars doesnt yield much gain, it is more for personal preference!!! You might get 5-7 hp with everything!!

 
Rep Power: 334

there was a member with an black 5 speed 01+ coupe that had i/h/e/flywheel/pulley and was putting down 110whp+ i believe.

not sure if he was an LX or EX though.



the gains arent great at all. its fairly noticeable but not impressive at all... definately not satisfactory. with an full exhaust set-up (header + catback), i think 4-5 hp sounds about right. however, the case is by adding aftermarketing exhaust/header (larger pipes), doesnt mean you only gain power, but lose some. therefore, low end is gonna reduce while high end power would increase very slightly.

 
Rep Power: 0

so if you're the kind of driver that rarely breaks 4000rpm all you get is a louder, more sluggish car

 
Rep Power: 258

ok, just another question, r pulleys only for manual cars?

 
Rep Power: 334

etdigitalis, i really cant claim that lol. but in most cases, thats how it is. my source comes from the members here.

karizzle, i believe so. http://dezod.com/pd_unorthodox_racing_ultra.cfm#

 
Rep Power: 282

yeah even with 2-3 thousand dollars in our engine N/A you will be very very lucky to get more than 140 whp.