Dual Exhaust-Possible? Options

[madmods]

I would like to use a dual exhaust or a single one coming out of the middle to clean up the looks to my rear. Has any one done it? Did they have to cut into the
spare tire holder?

[Supersprynt]

You can split the piping after the rear suspension and make a 2 90 degree bends.

[madmods]

Aint the rear wheel holder in the way?

[madmods]

this is what I want to do

[playr158]

mad mods i got it

and i'll put some pics up of how



with mine
i just hammered the side of my spare tire well a little bit to give me some extra clearance.....this way i get perfectly even flow....

by doing what super said you will have HORRIBLE gas flow on your car and not to mention a reasonably worthless system....exhaust gas goes out the easiest path meaning shortest....with the way super said it will 90% go out the right side and 10% out the left side giving a really poor performing system, bad sound and when its cold you'll look really really goofy.....

by splitting B4 the back support back as in my system with a Y pipe..you can make the both sides of equal length giving even and better flow as well as better sound

This post has been edited by playr158: Aug 15, 2005 - 2:20 PM

[blu94gt]

this is what I want to do

[right][snapback]324375[/snapback][/right]

that has to be the UGLIEST celica rear end i have ever seen in my life.

and i think with your bumper it would be cooler to have a center exhaust kind of like on a Mini

[madmods]

playr, you have done all kinds of mods with you car. Looks good. Do you have any more pics from the underside. thanks

[Supersprynt]

Aint the rear wheel holder in the way?

[right][snapback]324369[/snapback][/right]

You'd have to do it in-between. I used to have it on my car, but it was before I owned a digital camera and I hated it.

[ILuvMyCelica95]

this is what I want to do

[right][snapback]324375[/snapback][/right]

that has to be the UGLIEST celica rear end i have ever seen in my life.

and i think with your bumper it would be cooler to have a center exhaust kind of like on a Mini
[right][snapback]324384[/snapback][/right]

omg yes that is horrible! :-X it's huge, YUCK.

[playr158]

yea i'll get you some tonight mads

[madmods]

Wow , Im surprised you guys/gals hate it. I think that is one of the wickedest conversions i have ever seen!

[presure2]

QUOTE(madmods @ Aug 15, 2005 - 3:02 PM)
Aint the rear wheel holder in the way?

HEY< THATS MY CAR!!!!!!!!

[Jaws4God]

I liked that car too... especially the front with the Supra Bumper

[Gen6-GT]

with mine
i just hammered the side of my spare tire well a little bit to give me some extra clearance.....this way i get perfectly even flow....

by doing what super said you will have HORRIBLE gas flow on your car and not to mention a reasonably worthless system....exhaust gas goes out the easiest path meaning shortest....with the way super said it will 90% go out the right side and 10% out the left side giving a really poor performing system, bad sound and when its cold you'll look really really goofy.....

by splitting B4 the back support back as in my system with a Y pipe..you can make the both sides of equal length giving even and better flow as well as better sound
[right][snapback]324378[/snapback][/right]

That's not true, it doesn't matter which side the actual exhaust flow comes out, in fact the best performance would be if it all came out one side instead of having to split the flow. It loses velocity when it hits the fork in your exhaust. However, it WOULD result in worse flow if the piping was too small for that one side to flow enough volume, but that probably won't be a problem in this case.

The big question is, why do you want to add weight to the car when the dual exhaust won't flow any more than a single exhaust? Dual exhaust is only appropriate for cars with two exhaust manifolds, like a V6 or V8. Granted, there's plenty of dual exhaust I4's, but it's just a waste of weight (my SRT has a dual exhaust stock).

Single exhaust is better for your performance, as long as your piping diameter is large enough. I suggest doing a single exhaust with a center exit, maybe dual-tip, right in the middle of your bumper (make a cutout).

[Cutrara]

The big question is, why do you want to add weight to the car when the dual exhaust won't flow any more than a single exhaust? Dual exhaust is only appropriate for cars with two exhaust manifolds, like a V6 or V8. Granted, there's plenty of dual exhaust I4's, but it's just a waste of weight (my SRT has a dual exhaust stock).
[right][snapback]324931[/snapback][/right]

It looks cooler.

[playr158]

"That's not true, it doesn't matter which side the actual exhaust flow comes out, in fact the best performance would be if it all came out one side instead of having to split the flow. It loses velocity when it hits the fork in your exhaust. However, it WOULD result in worse flow if the piping was too small for that one side to flow enough volume, but that probably won't be a problem in this case."

dude you didn't even read what i was walking about we are comparing a 90* split compared to an even Y split.....Y is better then 90* by any physics means......

and yes the whole point is it looks cooler.....and CENTER exhaust nasty dual tip wtf....keep that to EURO stuff and mini coopers.....

[Kadett]

keep that to EURO stuff and mini coopers.....
[right][snapback]324954[/snapback][/right]

We european have the 3S

But ontopic. Looking at the back bumper en rear exhausts. Those Remus dual tip mufflers are FUGLY Cant say much about the rear bumper since its not painted.

[playr158]

i meant european cars kadett which doesn't include your 3s celica

import cars need to stick to single tip mufflers imo

[Kadett]

^^
Agreed.

My dual exhaust will go out also.

It has been cracked just before the muffler (already posted that) its been repaired at this moment. But when time comes and i find a nice single exhaust i will put that on.

Maybe before the repaint of my car i will already cut the "fake" part off because the underskirt has been cut into on the left side and has to be F/G and everthing to get it to look clean again.

The exhaust looks great but its has no real purpose (rice anyone??) but the exhaust sound is so addictive, hence my low MPG

[Gen6-GT]

"That's not true, it doesn't matter which side the actual exhaust flow comes out, in fact the best performance would be if it all came out one side instead of having to split the flow. It loses velocity when it hits the fork in your exhaust. However, it WOULD result in worse flow if the piping was too small for that one side to flow enough volume, but that probably won't be a problem in this case."

dude you didn't even read what i was walking about we are comparing a 90* split compared to an even Y split.....Y is better then 90* by any physics means......

and  yes the whole point is it looks cooler.....and CENTER exhaust nasty dual tip wtf....keep that to EURO stuff and mini coopers.....
[right][snapback]324954[/snapback][/right]

Actually, you said 90% would come out one side, not a 90 degree split, but I see the earlier message someone else posted about the 90 degree split and yeah, I agree, that would be REALLY bad. The exhaust is going to hit the wall with a 90 degree split in there. You want it to encounter as little interference as possible.

The center exit dual-tip thing is subjective, I don't think it's that bad looking, I only suggest it for the performance benefit. The dual exhaust is just extra weight on a 4-cyl., but it does tend to sound better (louder) and it does look nicer if it's done right.

As for the sound being worse with 90% flowing out one pipe, that's not necessarily true at all. A lot of the SRT exhaust systems are largely straight-back with a split-off for the second pipe, and they flow mostly from one side, but they sound even deeper than the stock system.

Here's the Mopar/Borla cat-back, notice how the pipes are set up, most of the exhaust comes out the driver side. (keep in mind that this system was designed and tested by Borla, for Mopar. i.e. it's top quality for flow and sound)


What it comes down to is the design; having inline resonators and as straight a piping as possible will make all the difference. The resonators will take out the raspiness of the I4 and keeping the main piping straight will give you the best flow characteristics.