Single exhaust??
Thread Starter
Joined: Nov 2004
Posts: 7,353
From: Upland CA
Single exhaust??
I have batted this idea around for a bit. I used Paint to eliminate the left side exhaust and I darkened the Magnaflow muffler. If I did this project, I would maintain the ID of the exhaust all the way to the rear. I would also likely have an oval tip and raise it slightly so its tucked closer to the bumper. The problem then is handling the left opening. I have seen 350Zs with a brake light covering the opening (JDM style). I could also use some spare Street Scene mesh. I could also cover it with plastic and rivet it for a purposeful look.
why does 350z ppl convert to single exhaust? does it help them make more power or they just want to be different? if you are going to be single exhaust get a big muffler so it looks good..do not get dual tip.
If you're going 3", single is probably better for flow. Too bad the spare tire well is in the way for a more straight piping. I think 2 1/2 is enough though.
Last edited by RHMax; Oct 22, 2008 at 08:43 AM.
I personally think the original duals looks much more aggressive from behind...but If you were going to do it, I think a 2.5" piping would be perfect with mandrel bends.
Or you can come up with a design like the IS-F exhaust...I think that would look hott.


or this...
Or you can come up with a design like the IS-F exhaust...I think that would look hott.


or this...
Last edited by BlackDUBS; Oct 22, 2008 at 11:41 AM.
about the iis-f exhaust thing that is mostly for the looks. that is not a true quad exhaust setup from what i read in a magazine but i think center exhaust would look much better and this will be another excuse for you to make a new rear diffuser with CARBON-FIBER!!!
Last edited by DrunkieTheBear; Oct 22, 2008 at 12:46 PM.
Thread Starter
Joined: Nov 2004
Posts: 7,353
From: Upland CA
I like the center exhaust and really looked into whether or not it could be done. The problem is that the wheel well is directly in the way. If it wasnt for that, I would probably do it. Here was an idea that I liked:
I think the R32 dual center exhaust is pretty sick too

How low does the wheel well go? It looks like you all have custom rear valences that go lower than normal, would the pipes fit under the well?

How low does the wheel well go? It looks like you all have custom rear valences that go lower than normal, would the pipes fit under the well?
Last edited by nalc; Oct 22, 2008 at 03:31 PM.
Please, two pairs are better than one pair (unless it's centered)...in the words of Nancy Reagan, "JUST SAY NO"!!!!!
why not just run custom piping to the axle back??? n have a body shop cover up the left side???.... probebly use the same technique squirell82 did with his grill???... if possible?.... just a thought...
you wouldn't have to remove part of the wheel well. all you would have to do is get a different muffler and put it on one side of the spare tire well and run 2 pipes out the back to the bumper exit. or use 2 smaller mufflers and curves the pipes around the spare tire well to the cut out. there is enough room buts that's a lot of bends.
what about stacks with flappers?!?! <====(note sarcasm)
what about stacks with flappers?!?! <====(note sarcasm)
Thread Starter
Joined: Nov 2004
Posts: 7,353
From: Upland CA
I kind of agree and disagree with some of the points raised so far. I think from a looks point of view, the symmetry of pipes on each side looks more pleasing. However, single exhaust on a car originally designed for two outputs has a sort of purposeful look to it. I agree that a car that is not dual exhaust hos no need for twin pipes. In fact, a single pipe eliminates the need to speculate as to what size is adequate to split the pipes, and whether o not there is turbulence. There is also a sound factor that comes into play with dual exhaust. If the two mufflers are not synchronized, I understand that the slightly different sound coming from each muffler creates a dissonance that can be unpleasant. Lets not forget that the extra muffler, flanges and pipes create added weight at the end of the car which has an effect on handling.
Keep in mind that if I undertake this project, it would look better than the picture in my first post because the muffler would sit up higher.
Here is a single exhaust for a Z. There are two vid/audio clips if u scroll down
http://www.alteredatmosphere.com/mm5..._Code=350Z_EXH
Keep in mind that if I undertake this project, it would look better than the picture in my first post because the muffler would sit up higher.
Here is a single exhaust for a Z. There are two vid/audio clips if u scroll down
http://www.alteredatmosphere.com/mm5..._Code=350Z_EXH
I've always liked the look of the dual exhaust, but single exhaust will be lighter, and its probably cheaper to get one muffler than 2. I believe that's why Z owners do it. honestly our duals are pretty much just for looks too, if its not true dual its not worth it imo.
Thread Starter
Joined: Nov 2004
Posts: 7,353
From: Upland CA
I cant imagine why that would have an effect like that. I would think it would be freer flowing, all things being equal. Also, I think the pipe diameter has a greater effect than whether it splits in the back.





what is this back pressure thing that everyone has on their minds these days, lets get off this back pressure bandwagon. Its all a myth that back pressure creates torque and really the onle incentive that this idea works is when you are on stock short runner exhaust manifolds (that was the idea, but really your just making the engine run lean and burning the valves). He now has headers, with a 3-1 collector, the more free flow of the exhaust the better, especially if there is less bends it will be better as well. Why else do you think guys at the track take the cat off the car and just leave the y-pipe, it creates more power, which is why exhaust cutouts are nice.
Last edited by DrunkieTheBear; Oct 25, 2008 at 11:09 PM.





what is this back pressure thing that everyone has on their minds these days. Its all a myth that back pressure creates torque and really the onle incentive that this idea works is when you are on stock short runner exhaust manifolds. He now has headers, with a 3-1 collector, lets all get off this back pressure bandwagon, the more free flow of the exhaust the better. In other works the less bends the better as well. Why else do you think guys at the track take the cat off the car and just leave the y-pipe, it creates more power, which is why exhaust cutouts are nice.
I say deus should do it, just with 3" cat and catback. Its cheap to make it yourself (piece it together (ebay is wonderful for it) and pay someone to weld it in) but thats up to him.




