I plan on doing a dual exhaust setup, what size piping should I use? 3"
Re: Dual Exhaust?
Originally posted by RSTeg
I plan on doing a dual exhaust setup, what size piping should I use? 3"
no
Than what size?
2.25"…maybe 2.5
what would happen if I get
2.00"
2.25"
2.50"
2.75"
3.00"
6.00" 
whatever you get, it won’t serve you any purpose in terms of performance. You have an Inline4 engine, one header.
yea, but it would look cool with a bw kit and sound cool too… depending on what kind u get…
I thought TL and Neons have one header too but they are dual exhaust from the factory. I’m guessing Dual because I plan on getting the BW rear. Would I lose hp of the piping is too big?
you’ll lose back pressure, and your car will suck at lower RPMs. You have a 1.7L, duals are for higher output engines.
than wouldn’t stay stock size be better? Why do people change to 2.25-3.00 then?
Originally posted by red GSR
you’ll lose back pressure, and your car will suck at lower RPMs. You have a 1.7L, duals are for higher output engines.
that is true to an extent… but the fact is dual exhausts are for V engines that actually have two outlets. our tegs are inline4’s. and his teg is 1.8L 
eh 1.7L, 1.8L. same thing. 
Originally posted by red GSR
eh 1.7L, 1.8L. same thing.
hehe, yeah just giving you a hard time.
but it’s not the simple fact that “higher output engines” use dual exhaust… it’s in the design of the engine. in an inline 4 cylinder engine with one header, putting on a dual exhaust doesn’t serve a purpose.
but to each his own.
i have a BW kit and contemplated on dual exhaust. i did’nt want to do it at first because of loss of back pressure. then the owner of a speed shop that my club is sponsored by enlightened me on an ECV (exhaust control valve). this bolts up to your piping between the header and piping. a cable runs from it and gets mounted inside your car. attached to the cable is a lever that allows you to control the amount of exhaust that flows through. the ecv works like a throttle ----- open & close. so through 1st & 2nd gear, leave it closed, but when you hit 3rd, open it up and let it breath. the ecv is only like $60. thats how you keep your back pressure with dual exhaust.
than wouldn’t stay stock size be better? Why do people change to 2.25-3.00 then?
Yeah what is the deal with this, I am very interested in making a setup that works together. If I were to have say a 60mm inlet on my Intake Manifold, what size exhuast piping would be optimal?
Does anyone make headers designed for dual exhaust on inline 4’s, and would it make a difference???
Originally posted by psYcoSix
[B]
Yeah what is the deal with this, I am very interested in making a setup that works together. If I were to have say a 60mm inlet on my Intake Manifold, what size exhuast piping would be optimal? [/B]
exactly, most people who get the big huge rice boy exhausts aren’t gaining (hurting if anything) their performance. The only cars that benefit a 3 inch exhaust are Turbo/Forced Induction setups. A big exhaust like 2.5 inch will definitley free up a lot of flow, but only gives gains at the very top end of the RPM power curve but at the same time losing some low end power.
Bolt ons that free up air should be viewed as a base to free up your engine to breath when you have built up your engine with internals. A stock engine doesn’t need to breath as much as some people think, that’s why you see all those civics with I/H/E, loud as heck, and accelarating all slow down the street.
My exhaust is 2" at the Cat Converter and only gets to 2 1/4 at the largest diameter.
If it was me I would move the exhaust to the passenger side to get a straight through flow instead of dual pipes. Just my .02 cents.
LMAO 3" thats crazy. do you run a turbo? then maybe thats not so insane. Get a 2.25" pipe its the best all around.
Why do you want duals anyways… kinda dumb looking with a stocker bumper since there is no cut for the other side… extra weight…twice the money for the muffler YOU HAVE TO BUY TWO. Its just kinda…ahhh…pointless:crazy:
**** it dude, get dual 5.5’'s.:loser: