View Poll Results: What type of aftermarket exhuast
One with tip coming from both sides of the car
56
73.68%
Or one with a single pipe
20
26.32%
Voters: 76. You may not vote on this poll
Exhaust Dual or Single
10-13-04, 05:09 PM
#5
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i love the look of duals and for that reason alone is why i would never go single .... but then again JIC has a full titanium cat-back .... just think of the weight savings, in the end its all about prefrence
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10-13-04, 07:14 PM
#8
Rotary Freak
go duals they look better i have a single because it came with it i probably will change it to duals because they never did anything else to the exhaust and ill redo everything on tthe exhaust when i get money
10-13-04, 07:20 PM
#9
...94% correct.
Duals look better
Single performs better
If you go with a single, even out the divider in the back bumper so you don't have that divot for a muffler that isn't there. That looks goofy as hell.
Single performs better
If you go with a single, even out the divider in the back bumper so you don't have that divot for a muffler that isn't there. That looks goofy as hell.
10-13-04, 07:20 PM
#10
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Single is more efficient. Less bends in the exhaust means higher flow. I have straight 2.5" single exhaust on my N/A. I have only 3 small bends in the entire exhaust. Just make sure to get a nice muffler. The cork sport ones are too raspy for me. I went with a magnaflow muffler. Its straight through and pretty big. But it has a 3" outlet and sounds really deep and smooth.
10-14-04, 01:16 AM
#12
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i I really cant decide. i have a turbo with duals and i hate having duals when your car doesnt have a v-engine. its all psychological with me. it usually looks better with duals to me but i think ima make a single out exhaust. call me a ricer, but i think single exhaust looks good if its at an angle and you have a curved tip.
10-14-04, 02:11 AM
#15
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Originally Posted by Makenzie71
proove it.
10-14-04, 02:13 AM
#16
...94% correct.
Originally Posted by NZConvertible
I've posted tons of supporting information in countless threads on this topic. In fact I did a quick search for "dual exhaust" under my user name and got 32 hits. Feel free to search for them.
I see a bunch of stuff about "true duals"...ummmm...but nothing covering this topic...
10-14-04, 02:52 AM
#17
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Originally Posted by vice
i I really cant decide. i have a turbo with duals and i hate having duals when your car doesnt have a v-engine. its all psychological with me. it usually looks better with duals to me but i think ima make a single out exhaust. call me a ricer, but i think single exhaust looks good if its at an angle and you have a curved tip.
10-14-04, 03:01 AM
#18
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Personally, I think an FC with stock bumper (two exit cut outs) looks better with 2 exiting mufflers. If I had an aftermarket bumper and had a choice of 1 or 2 cut outs, I'd stick a single N1 in there. For now, the RB full exhaust is the best choice.
Good sound at idle and full throttle. It isn't too "raunchy" sounding like some cheap mufflers.
Good sound at idle and full throttle. It isn't too "raunchy" sounding like some cheap mufflers.
10-14-04, 03:13 AM
#19
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Look harder. All of these threads were in the search results...https://www.rx7club.com/2nd-generation-specific-1986-1992-17/single-tip-vs-dual-exhaust-266172/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/single-dual-exhaust-241029/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/thoughs-single-exhaust-207754/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/single-out-dules-170374/
Other search terms would probably find more.
10-14-04, 04:31 AM
#20
...94% correct.
dood...none of those links are relevent because all those links seem to be articles about catbacks, and this thread is about asthetics. Not very many of us are talking about performance,here.
...but just to start an arguement...
The majoraty of the threads that come up with that were about true dual exhaust setups or dual outlet cat-backs. When it comes to catbacks (the topic here), I can't believe you can sit there and tell me that, all else being equal, a smooth and fluid bend to a single outlet will not flow as well as or better than a dual out with a rather abrupt "Y" joint.
You talk about fluid dynamics a lot...even though most of the principals of fluid dynamics can hardly be applied to an exhaust (except zero-g study). Fluid flows strongest and fastest down a straight and even path. If you bottle neck that path, water builds and backs up. If you open part of it up, water pools and slows, causing resistance upstream and less efficient flow downstream. If you put a curve in the path, it will put more force towards the outside wall and slow down. If you deviate from a straight and even path, no matter what teh circumstance is, you interfere with flow. This includes adding a "Y" in the middle of the run.
Saying that a dual cat-back will flow as well as a single is like saying a V6 makes more power than a I4. You're ignoring too many variables.
...but just to start an arguement...
The majoraty of the threads that come up with that were about true dual exhaust setups or dual outlet cat-backs. When it comes to catbacks (the topic here), I can't believe you can sit there and tell me that, all else being equal, a smooth and fluid bend to a single outlet will not flow as well as or better than a dual out with a rather abrupt "Y" joint.
You talk about fluid dynamics a lot...even though most of the principals of fluid dynamics can hardly be applied to an exhaust (except zero-g study). Fluid flows strongest and fastest down a straight and even path. If you bottle neck that path, water builds and backs up. If you open part of it up, water pools and slows, causing resistance upstream and less efficient flow downstream. If you put a curve in the path, it will put more force towards the outside wall and slow down. If you deviate from a straight and even path, no matter what teh circumstance is, you interfere with flow. This includes adding a "Y" in the middle of the run.
Saying that a dual cat-back will flow as well as a single is like saying a V6 makes more power than a I4. You're ignoring too many variables.
Last edited by Makenzie71; 10-14-04 at 04:41 AM.
10-14-04, 05:40 AM
#21
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Originally Posted by Makenzie71
none of those links are relevent because all those links seem to be articles about catbacks, and this thread is about asthetics. Not very many of us are talking about performance,here.
You talk about fluid dynamics a lot...even though most of the principals of fluid dynamics can hardly be applied to an exhaust...
Saying that a dual cat-back will flow as well as a single is like saying a V6 makes more power than a I4. You're ignoring too many variables.
Last edited by NZConvertible; 10-14-04 at 05:43 AM.
10-14-04, 12:52 PM
#22
...94% correct.
Originally Posted by NZConvertible
Read the first post. Where is aesthetics mentioned? You brought up performance.
Wow... So exhaust gas (which is a fluid) that is moving (i.e acting in a dynamic manner) through a pipe does not follow the principals of fluid dynamics. That is possibly the dumbest thing I've ever heard.
That's exactly right! That's what I said repeatedly in those threads (which I doubt you read). That's exactly why you can't say single always flows better than dual ("Single performs better", your words), because there are too many variables. Hmm, I said that a few times too. Maybe you did read them...
10-14-04, 04:04 PM
#24
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Which brings us to why headers help. If you notice the curves on a header are less abrupt and smoother for less resistance. Same goes for exhaust. If a motor can flow the exhaust out faster
10-14-04, 04:35 PM
#25
Mmm...unburned exhaust
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One of the reasons I love the Rx7's and 8's? Freaking dual exhaust looks badass on them. Duel exhaust makes the car look mean. I'm a total V8 guy and love the look of dual power. You get an agressive stance and a unique sound compared to a lame looking fart can o' power single exhaust setup. Heck, even when I see a newer honda with duel factory exhause I think it looks cool.
DUAL BABY!
DUAL BABY!