91zxtt

I'm just wondering where the cross-over tube would go on the single exhaust. There's no room above the tranny and if it was below the tranny, then it would drag on the ground. It would really need to be a 2 into one design after the cats, or at the cats if they were removed. If that's the case, then I wouldn't call it a true single exhaust.

Again, I ask why would someone want to do this?

Mousier158

Sigle exhausts that you can get from a variety of makers like on this link are cat back.
http://page12.auctions.yahoo.co.jp/jp/auction/p19072457

RPS13_GZ32

and only 11,000 Yen! Isn't that only like $100 USD? Pretty good deal if you can speak Japanese and want a single exhaust.

EDIT: Doesn't look like they'll ship this one outside of Japan though.

bardabe

Just go get it done custom. it's better.

RPS13_GZ32

agreed ^^^^

91zxtt

How can a single exhaust possible outperform the dual? I would think that there would be a tremendous amount of turbulence.

bardabe

yeah that's what I thinking. woudn;t they have to run liek five inch piping or so to equal to the dual 3 inch pipign and PSi of both turbos?

WhtFairLadyZ

I talked to a buddy of mine who owns an exhaust shop, he said that for the Z cars an Na with dual exhaust NO LARGER than 2.25" would be ideal He said any larger would rob power or atleast bottom end response. As for the TT cars, He said that a single exhaust would actually flow better due to the fact that the tuner could run a single 4" pipe or maybe a bit larger and still get the same flow characteristics with half the cost of a dual setup.

I know APEXi makes a TT single exhaust with a 220 mm tip like the HKS Hyper but it has a Y pipe and 4'' primary I believe.

Personnaly, this is one of those points where u ask yourself were does looks and performance become more of a priority. The Z cars are known for TRUE dual exhaust. I love the look of my HKS hyper sysem with the dual angled up swept cans as opposed to all other cars who have just one.

Zeorymer

You guys feeling smart yet?

Riz Z Speed

why not enlighten us with your superior intellect then?

CanyonCarver

he doesn't have any.......... he just like the rush of boosting his low self esteem by bashing other people............. what's that............... a boost addict

EDIT: ^^^^ oops, I forgot....... I speculate....... Fact ^^^

EDIT II: I haven't even chimed in on the single exhaust theory. It is my humble opinion that the exhaust designed for the car from the factory was tuned by the factory to provide for the best performance. If you choose to perform mods to the engine to increase h.p. you would definitely want to increase the flow capabilities thru the exhaust. But, arbitrarily changing the design of the exhaust system, to me, can very likely have a negative effect on performance. The only way to positively improve performance with a different exhaust system design would be to do a baseline dyno run, then test a name brand aftermarket exhaust, and then do a comparo to your new single exhaust set-up. Otherwise, your defeating the whole purpose of doing the mods in the first place. Now that's my $.02

Zeorymer

ok

On the Z32... the single DOES NOT go all the way to the turbos. So you guys can drop that whole "single exhausts works better on inline 6s and sequential turbo" theory that's blocking your logic. Just how an X-pipe or H pipe combines the exiting gases after the test/cat pipes on the Z32, the single combines it into one larger pipe after the test/cat pipes to compensate for the loss of one exiting pipe. Thus creating a direct release for the gases to escape quicker by means of higher exiting velocity. This creates better low end turbo/engine response which means more usable power sooner.

KENZ

why cant i reply to any of these threads?

i had to re-sign on as a different user name.

EDIT: administrators, please clean up this thread and only post up the usefull info cause i think things have gotten out of hand? i dont appreciate the comments made towards anyone because of peoples opinions and towards people of where they live like.... hawaii? and please explain why i cant reply to any of these threads?

CanyonCarver

I apologize if I offended you Ken.

To add a little to what zeo said about the H or X pipe configuration. It's not arbitrarily placed in a convenient location. It's placed at a specific distance from the exhaust valves, and it's in a specific shape to control the exhaust gas pulses and back pressure. That's what a tuned exhaust is. Keep in mind that not enough back pressure is generally a bad thing.

WhtFairLadyZ

The critic missed what i said...i said the same thing in my post. He just reworded it.

RPS13_GZ32

ugh, am I seriously the only one who is sick of this thread?
I think the point was established a long time ago.

Riz Z Speed

yup, agreed.
next subject, cuz this is closed.