Not really...and of the one's I've seen and heard...the pipes were ****eyed and it sounded like poo

 

It might look nice, but it's not functional in the LEAST, unless you have independent pipes coming from each cylinder.
Remember, DUAL exhaust was a by-product of a V6/8/10/12's having TWO banks of cylinders.
We have one. Ours is not a "V"-4. It's Inline.
Unless you're running some custom header that at least breaks it up into 2+2, it's just plain silly IMO.

[ 09-19-2002, 05:45 PM: Message edited by: MichaelXi ]

 

Originally posted by MichaelXi:
It might look nice, but it's not functional in the LEAST, unless you have independent pipes coming from each cylinder.
Remember, DUAL exhaust was a by-product of a V6/8/10/12's having TWO banks of cylinders.
We have one. Ours is not a "V"-4. It's Inline.
Unless you're running some custom header that at least breaks it up into 2+2, it's just plain silly IMO.

<font size="2" face="Verdana, Arial">while i agree with you totally, would there be any benefit to doing the 2+2 approach? i have always wondered about this. do you have any ideas on how the sound would change with 2 pipes, 2 mufflers, and 2 cylinders in each? might be interesting to try something like that.

 

..

[ 09-19-2002, 06:12 PM: Message edited by: sit'n'on_chrome ]

 

You would have to redesign the whole exhaust system. Two independant 2-1 headers (one for each pair of cylinders), each leading to it's own CAT (if you so choose), then each cat having it's own catback exhuast.

I would bet money, that much HP gain (if any) would be lost with the weight gain of all this steel. And plus, have you looked under the focus to even see the possibility of two CAT's?

I mean so much work and money for so little gain. Why?

 

And...

You have to look at it in terms of the power gained being offset by the weight gained.

but asthetically duallies kick a55

-P@

 

years ago before cat's we used to split our manifolds on I6 and I4 engines to run dually's, if done correctly it has a pretty cool sound. Some sounded quite strange too.

 

oh yeah, this is purely academic for me. i cant even afford a cat back, much less two and a custom system!

 

I thought this would be the case, oh well I'll just get a nice dual tip muffler I guess.

 

I don't know if there are gains to be had or not. I was only pointing out that Dual exhaust on an I-4 is kind of pointless.
The systems that I've seen use a "T" near the rear of the car to send the pipe to each side.
IMO, the additional restriction caused by those angles is rather detrimental to Performance.
IMO Duals are best left to vehicles w/ multiple banks of cylinders.

 

I had a ZX3 with a "dual exhaust" it had 2 1/4 pipe back to the rear suspension and split from there. as far as sound...i never had so many compliments on it. i have pics i could e-mail if somebody wants to post them.

Dave

 

how about this... get a single in/dual out muffler. instead of going thru all that crazy crap to get it to be dual, just do that with a little extra piping and a 2nd tip.

 

is there enough room over the rear suspension to fit a dual setup back there?

 

adding more weight and more turns in the piping that restrict airlfow just isnt my bag IMO

 

well wait a couple months and ill let you guys know how it works out 2-1.

 

Quad? Why don't you just go for EIGHT of them!

j/k

 

Originally posted by Hi-Risk:
Quad? Why don't you just go for EIGHT of them!

j/k

<font size="2" face="Verdana, Arial">yeah, a pipe per valve!! that would give like 50 hp!

 

New A4's both 6s and 1.8Ts have dual exhaust...

http://www.audiusa.com/about_pressrelease_detail/0,,articleId-3501_countrycode-1_subUsageId-80_,00.html

Any explanation? I have not been able to find information on what the actual setup is.

 

Alot of the drag Hondas around here uyse really short side exit (side of the fron bumper) manifolds. They are generally a 2-1 design with two pipes coming out the side. At that point it may make sense, for a daily driver.... prolly not.

 

I recal seeing a picture of a focus rear valence that had an exit for dual tips?

 

Originally posted by Blis:
New A4's both 6s and 1.8Ts have dual exhaust...

http://www.audiusa.com/about_pressrelease_detail/0,,articleId-3501_countrycode-1_subUsageId -80_,00.html

Any explanation? I have not been able to find information on what the actual setup is.

<font size="2" face="Verdana, Arial">The 1.8T's have a single pipe off the engine thru the cat, resonator, to the muffler. When they leave the muffler then the exhaust gasses exit thru 2 pipes.

 

Originally posted by David Anderson:
I recal seeing a picture of a focus rear valence that had an exit for dual tips?

<font size="2" face="Verdana, Arial">I think there are a couple of them.
They're just for show though.

 

The Mitsubishi 300GT VR-4 uses a dual exhaust stock, however all of the research/tuning etc. has proven that a single exit HKS system has the best gains...

 

Same with the RX-7. The second gen RX-7 had dual exhaust but the most power is to be had with a single... i do however wonder if one pipe per rotor would be even better.

 

Sorry, I can't resist...

post whore move

...why not just put a crack pipe coming up from the floorboard? It'll at least make you feel like you're going faster.

Comon, dual/quad pipes coming from a Zetec I4. No gain to be seen, IMO, over a quality Header>HF Cat>Flex>Catback. Now this statement was meant for NA vehicles. Who knows what it may or may not do, if designed correctly, for a FI Zetec.