Dual Exhaust, anyone have it? Options

[hiflytsi]

I love seeing super cars with dual exhaust and when I have enough money saved up, i would like to have a full 3in dual exhaust put in, but I was curious if anyone else has done this, and if so, any pics of it, because I know it would look sexay sweet.

[Drunken_Style]

Yeah I've been planning to do it to mine but haven't had the time to get the second hole in the rear bumper cut out. If I go get it done soon I'll post some pics.

[Coomer]

Here's my old dual exhaust setup on my car.

Attached image(s)

 

[boosted_K2]

Ray used to have it done, but sold it b/c hes heading in a different direction with his car.

[BlackBeauty]

Levin style

I'd rather have the single oval middle exhaust like Boxter style. The celica's rear curve of the body is already similar to it

[FallenHero]

The lack of a recess for it to fit in would look funny though. If you could get one molded though...

[Guest_Jason_*]

Your looking to get less low-end torque with a dual exhaust I believe.

[BlackBeauty]

Or you can get the Rice Limited Edition dual-exhaust. Just get a used exhaust and some pipe, and weld it to the existing pipe without actually making any exhaust flowing into it.
If somebody ask why only one exhaust work in idle, just tell them it's new version of VTEC where the other exhaust valve only opens on high RPM!

I'm pretty sure 9 of every 10 ricer will believe that. The other 1 will try to look up on the internet first before believing

[hiflytsi]

So are you guys saying its a bad idea to do this now? I think it would like pretty decent. oh well...

[Guest_Matthew_*]

I agree with Jason, it's gonna reduce torque. And like black beauty said. I know a guy who has a civic and he has his main pipe split then has 2 mufflers and his body kit is made for the dual exhaust set-up. It looks sweet in the summer and when it isn't running in the colder weather, but when he is driving there is less exhaust that comes out of one of the pipes. you can really tell that it's fake. It'll look cool if you live in cali, or another warm climate. But other than that, people will notice.

[boosted_K2]

the only valid response you got so far was the fact that low end torque would decrease... everything else was just opinions... if you went ahead and modded up for some more HP you wouldnt feel the loss at all... its all about if YOU think itll look good, im sure itll sound good, and i think the point blackbeauty was makeing was that is how NOT to do a dual setup
and fallen hero was just stating how to make it look best... we're not discouraging you! just pointing you in the right direction, its your car, do as you wish!

[boosted_K2]

now theres 1 more valid point haha

[FallenHero]

The thought is good, but i think it's more trouble than it's worth. Think of it this way. Go look under your car at where you are wanting to mount the extra muffler. there is nothing to mount it to, and no room to mount anything with size. If you do it, it's goanna have to be a small set.

[hiflytsi]

ok, lets say i was running a 2nd or 3rd gen 3sgte or a little over 200hp on my 5s, still gonna loose power or would the turbo make up for the low end torque.

[BlackBeauty]

Logically, if you want to preserve the engine output (read: torque), the volume of the exhaust pipe has to be the same.
Which means, if you decide to split the final part of the exhaust into TWO, then the length of pipe the gas has to travel becomes TWICE as much.
Then, if following the logic, the (umm, I forgot the word for this) area of the pipe has to be HALF of what it should be.
(Providing that the splitting section is perfect and does not hinder any airflow)

Which means, try using a pipe half the size of what you have (doesn't necessarily mean half the diameter, though), and try to make a flawless joint
(IF both ends have the same shape and length)

[all4sho94st]

Personally i dont like it....

[sirrahtap]

i think it would look really cool. and if you did it right, i don't think it would hurt performance. 2.25 is probably the biggest i would go with. if you ran 2.25 off the headers then split it a little after that, i think that you wouldn't lose the backpressure because the initial single 2.25 inch pipe would be putting on the same....it shouldn't really matter if you make the pipe bigger or split it, and long as you have a fair amount that is just the single 2.25

[ghostdog]

QUOTE (BlackBeauty @ Jan 28, 2003 - 1:57 AM)

Logically, if you want to preserve the engine output (read: torque), the volume of the exhaust pipe has to be the same. Which means, if you decide to split the final part of the exhaust into TWO, then the length of pipe the gas has to travel becomes TWICE as much. Then, if following the logic, the (umm, I forgot the word for this) area of the pipe has to be HALF of what it should be. (Providing that the splitting section is perfect and does not hinder any airflow) Which means, try using a pipe half the size of what you have (doesn't necessarily mean half the diameter, though), and try to make a flawless joint (IF both ends have the same shape and length)

finally someone talking sense. thank you.

[remjay]

QUOTE (BlackBeauty @ Jan 28, 2003 - 1:57 AM)

...., the (umm, I forgot the word for this) area of the pipe has to be HALF of what it should be....

"cross-sectional"

[Charlie97L]

yeah don't go over 2.25 unless you have a turbo. you will lose a lot of power if you have a 3" exhaust on an NA engine.

[NEVERSTOP]

okay I didnt really read ne of the other posts so if someone already said this then disregard this.... Dual Exhaust is worthless on a inline 4 cylinder... yea it looks cool but it will actually SLOW YOU DOWN.. way too much back pressure... If you want the look and the preformance then just hook up your exhaust like you normally would and then for the one on the drivers side just mount it and dont hook it up... leave it as a dummy.

the only way to hook up dual exhaust on a inline 4 is to have the exhaust manifold custom made to run into two seperate downpipes and run the out the side of the car with the tips parrallle to the side of the car... otherwise its worthless to have


BTW It does look really cool though.

[94celicaguy]

if its not a v8 dont do it!!!!!!!!!!!!!!!!!!!!!!!

[BlackBeauty]

QUOTE (remjay @ Jan 28, 2003 - 5:16 PM)

QUOTE (BlackBeauty @ Jan 28, 2003 - 1:57 AM) ...., the (umm, I forgot the word for this) area of the pipe has to be HALF of what it should be.... "cross-sectional"

MY GOD YESSSS!!!! **** CROSS-SECTION!!!! I got it on the tip of my tongue but couldn't quite find it. p*$$ed me off for a few days

Anyway, to sum them up, the easiest set up (for no-dummy and minimum-performance-loss) is: try to split the exhaust somewhere in the middle, and do a symmetrical branches, with the cross-section area of the newer pipe roughly half the size of the original one. I think you can make it a little bit bigger (very little) to compensate for added friction so that the back-pressure will remain roughly the same. That way you won't have to get a new manifold

(I have common sense? Do I?)