Dual exhaust [Merged 7-9]

[XxXEcLiPsE93]

eh... i have a friend who has an integra ls with a dual exhaust...prolly the sweetest sound ive heard from a car in my life...

the thing about it is though one of his mufflers actually have smoke come out of it the other doesnt, thats cause only his right exhaust hooks up right to the headers the other just got welded on about 6 inches down the line and because of that the one welded on is like really low and bassy in sound while the other one is really "ricey" sounding...there both 2.5 inch in diameter with 3.5 inch muffler tips...and together they make a sweet ass sound...anyway im supposed to rerace him pretty soon hopefully this week(yes he's the one with 16 grand in mods who i raced about a week back and had a thread on)...

anyway though stickiong to topic...i never saw or heard a eclipse of any kind with a dual exhaust but if a 1.8 liter engine non-turbo can sound as sweet as it did im sure a dual exhaust on a turbo eclipse definetly would...not to mention the boost in horsepower...

id say if you wanna be unique and take the time to make a custom setup and have ur car sound really good then go for it

 

[TurBoGs-T]

You flamers are hilarious. He says clearly he "knows" it's pointless to have it but he still wants it. For all the critics who have probably never seen a dual setup on a dsm. It looks good.

 

[Tallen]

nice photochop.

 

[aves911]

Hey,

I have seen one dual exhaust cat back system for a DSM I think HKS made it. A while back someone posted either here or on talk about getting it installed on his car. I went to the link and the pics of it looked pretty impressive. I dunno mabey try searching around i think it cost in the neighborhood of 500+.

Good luck, post some pics if and when you get it done

 

[91AWDTurbo]

I just built my own for my 91 TSI. i bought an APEXi N1 3" downpipe and chopped it right where the cat would bolt up. there i installed a DynoMax Bullet muffler because it is only 4" in diameter while being true 3" through it. at a quick glance you would think its a cat. then i went back about 1 1/2 feet and put a 3" in/dual 2.5 outlet y-pipe and ran dual 2.5s to each corner with some small 2.5 chrome tips like you would see on an old muscle car. gave it more of a sleeper look than the factory exhaust i think. cost $350 total and sounds good too.

 

[TurBoGs-T]

^^^ PICS

 

[xsteclipse6902]

Is it possible to put a dual exhuast kit on a 96 eclipse gs-t. I have seen this done on 2 eclipses but i was wondering if you had to custom make it or if they sell kits.

 

[ericismyname]

custom, many posts on this. everyone will tell you they are ghey becuase they dont produce nearly as much power as single and the extra piping is dead weight. But hey i think they look coo

 

[TurBoGs-T]

Don't listen to what the haters say. Yea it does doo-doo for performance increase but it looks good. Heres a current thread about dual exhaust

http://www.dsmtuners.com/forums/showthread.php?s=&threadid=90453

 

[yomama0sama]

I am planning on making custom exhaust for my car. Would it be a good idea to have the exhaust to y into to parts for to mufflers after the cat, or would a single 3" muffler be the better way to go?

 

[clownface]

single pipe
im not really sure why though, sumone?
a friend told me while back about backpressure for the turbo and thats why my exhaust is striaght with a bend in it right before the muffler.....was he just full of crap or is that right>?
and arnt exhaust at split off into 2 just for show?

 

[kpt4321]

Don't say backpressure again. Backpressure is something that is ALWAYS bad, and you NEVER want to have it. Smack your friend and tell him this.

Dual exhaust works great, IF you need it. The thing is, with a turbo 4 cylinder, even one making a lot of power, you don't need the extra flow that you get with a dual exhaust. A single 3 inch pipe will be more than enough for most people, and if you really need more flow you can always go to a 3.5" system.

Dual exhaust just adds weight and complexity, and cost. Also, in order for it to work correctly, you need to split the pipe as early as possible, splitting it in the rear does very little good.

 

[clownface]

okay thanks for the info, i will smack friend,

 

[jbillakdsm]

Only thing the dual exhaust is good for is adding weight to your rear end. Use a sandbag, it's a lot cheaper.

 

[jbillakdsm]

Only thing the dual exhaust is good for is adding weight to your rear end. Use a sandbag, it's a lot cheaper.

 

[workin_on_it]

back pressure isnt always bad.
n/t cars need backpressure for low end
for a turbo car tho, the turbine wheel provides all the needed backpressure, and the best exhaust for a turbo car is no exhaust.
if you really want to spend the money on a dual exhaust.....do it for looks not performance, although you wont lose hp from it, you will gain a bit of weight.

 

[thekellbeast]

http://www.dsmtuners.com/forums/showthread.php?s=&threadid=71948&highlight=backpressure+always+bad

Read ^^^

 

[workin_on_it]

sorry..... they need velocity for low end, and backpressure is a side effect.

 

[98TsiAWD]

Originally posted by workin_on_it
back pressure isnt always bad.
n/t cars need backpressure for low end
for a turbo car tho, the turbine wheel provides all the needed backpressure, and the best exhaust for a turbo car is no exhaust.
if you really want to spend the money on a dual exhaust.....do it for looks not performance, although you wont lose hp from it, you will gain a bit of weight.

My slipfit RNR 3" exhaust came apart at the rear axle area and the car was absolutely gutless. If you are running a small turbo (t25, 14b,16g) I think a little restriction in the exhaust is a good thing.

 

[RiceKiller_TSi]

Originally posted by 98TsiAWD
My slipfit RNR 3" exhaust came apart at the rear axle area and the car was absolutely gutless. If you are running a small turbo (t25, 14b,16g) I think a little restriction in the exhaust is a good thing.

Actually I thought the same thing as what you're saying here but some seem to disagree with me in other forums. Can you elaborate on why a little restriction is good with a smaller turbo?

 

[kpt4321]

Originally posted by workin_on_it
sorry..... they need velocity for low end, and backpressure is a side effect.

Yeah. They DON'T need backpressure. No. So don't say they do.

 

[kpt4321]

Originally posted by 98TsiAWD
My slipfit RNR 3" exhaust came apart at the rear axle area and the car was absolutely gutless. If you are running a small turbo (t25, 14b,16g) I think a little restriction in the exhaust is a good thing.

Nope, something else is at work here. You never want restriction.

Lots of people drop their cat-backs at the track, even in small turbos. It makes you faster.

Restriction = bad.

 

[RiceKiller_TSi]

Originally posted by kpt4321
Nope, something else is at work here. You never want restriction.

Lots of people drop their cat-backs at the track, even in small turbos. It makes you faster.

Restriction = bad.

Restriction bad... got it! I will continue to increase my flow until it sounds like thunder from the Gods!

 

[the_jester]

anyone who says that ANY car needs backpressure obviously does not understand engines. backpressure is the enemy. the faster the exhaust can escape the better. the only reason for dual exhaust is on -V- engines, they have two cylinder banks so you can therfore run the exhaust straight back from each side. but with todays computer controled engines most cars arent true duals. but on a inline 4 there is nop need for dual exhaust like everyone else said it will just add weight

 

[Knuckles2.0]

well boost creep is a problem with no back pressure... at least with a internaly gated turbo.... thats why i'm goin with a 2.5" exhaust i dont got the bread for a external wastegate