I want to eliminate my dual exhauste i need your opinion
10-25-07, 11:45 PM
#27
I'm your turbo lover
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I've got a 3" turboback exhaust w/ hi-flow cat exiting the driver's side. It's straight back with hardly any bending, it backfires and is loud as hell. I LOVE it!
10-26-07, 03:33 AM
#30
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Maybe it is, but has your exhaust sacrificed performance to get that noise level?
That tells me nothing. Magnoflow is a brand, not a type of muffler. I'm sure they make quiet, restrictive mufflers as well as free-flowing, not-so-quiet ones. And an your 18" muffler could be anything. Could be for 1.5" pipe; that'd be quiet... 
Bollocks. You describe a single-muffler exhaust system and I'll describe a dual-muffler system that will outflow it. Pipe size is far more important as a determinant of flow, and it's easy to select two parallel pipes and mufflers that'll flow better than one. I bet you think the Y is a huge restriction...
And I bet under the same conditions his would flow a lot more than yours too. Exhaust design is always a compromise between flow, noise and cost.
24" magnaflow and a 18" muffler on the end.
Bollocks. You describe a single-muffler exhaust system and I'll describe a dual-muffler system that will outflow it. Pipe size is far more important as a determinant of flow, and it's easy to select two parallel pipes and mufflers that'll flow better than one. I bet you think the Y is a huge restriction...
I run 2.5" pipe on mine. A friend runs like 3.5 or 4" and his car is much louder than mine.
10-26-07, 09:47 AM
#33
Maybe it is, but has your exhaust sacrificed performance to get that noise level?
When i go big turbo, I'll get 3.5" tubing, but same muffler set up. I'll try to get the details on the mufflers themselves, but it really is a pretty quiet set up.
I beleive the 'Y' creates a bit of a problem. Nothing terrible, but no matter what, one of the tips won't flow as much the other. So in some cases, this would create back pressure.
10-26-07, 10:41 AM
#34
Engine, Not Motor
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If you are looking for opinions, mine is that single looks stupid and broken. The factory (or aftermarket) duals balance out the car and offer a good compromise between flow and noise. In fact a good dual system (like the RB system) is downright quiet.
If you want to convert to single, do it properly and mod the other side of the bumper to to eliminate the cutout in the bottom for the nonexistent muffler. With the cutout still there it looks like one muffler rusted and fell off, and with the loudness of many single systems it sounds like it too! Traditionally, Mazda rotary cars with single exhaust have exited it on the passenger side, so in the off chance that I would ever go to a single exhaust that's where I would place mine.
If you want to convert to single, do it properly and mod the other side of the bumper to to eliminate the cutout in the bottom for the nonexistent muffler. With the cutout still there it looks like one muffler rusted and fell off, and with the loudness of many single systems it sounds like it too! Traditionally, Mazda rotary cars with single exhaust have exited it on the passenger side, so in the off chance that I would ever go to a single exhaust that's where I would place mine.
10-26-07, 12:32 PM
#39
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Singles and duals should have a war! Let's all meet in a field somewhere and shoot at eachother and then we'll see which exhaust is better! What, don't like my idea? It's worked pretty well in the past.... 
10-26-07, 03:09 PM
#42
back from the land of v8s
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I changed my OEM to a bonez cat and the N1 cat back system and loved the performance I got out of it. Yea I like the look of the duals but heck for an extra $300 or so ... i could do other mods for more power.
Oh yea that was in my old car that got totaled.
Oh yea that was in my old car that got totaled.
10-26-07, 08:54 PM
#43
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I beleive the 'Y' creates a bit of a problem. Nothing terrible, but no matter what, one of the tips won't flow as much the other. So in some cases, this would create back pressure.
i guess bling is winning this thread...
10-26-07, 11:48 PM
#45
Lives on the Forum
I have an RB dual system and it looks nice and is quiet, but it's quite heavy. I'll likely be switching to a 2.5" single system this summer in an effort to get the cars weight down (it was at 2850lbs when I weighed it last summer). Sure it might be a small percentage, but if you do a bunch of small percentage decreases it all adds up, every pound counts. I'm also looking to get a little less restriction, and I don't mind if it gets a little louder, as it'll be retired from daily driver status that summer anyway.
I don't think it looks bad per se, even with the other cutout, but I suspect that for me anyway, having a black car will be good as it'll be less visible.
Basically it's a personal preference, so there's no point in arguing about it, each has its benefits and disadvantages, it just depends what ranks higher in your personal oppinion.
I don't think it looks bad per se, even with the other cutout, but I suspect that for me anyway, having a black car will be good as it'll be less visible.
Basically it's a personal preference, so there's no point in arguing about it, each has its benefits and disadvantages, it just depends what ranks higher in your personal oppinion.
10-27-07, 11:15 AM
#48
you're on Aaron!! 
NZConvertible, i needed a boost controller of some kind, and since i am running a mod'd stock s5 turbo for now, the most economical way was to add a muffler. 16psi isnt exactly safe on a stock turbo, No matter what ECU you have.
So yes it restricted flow but in the intended manner.
NZConvertible, i needed a boost controller of some kind, and since i am running a mod'd stock s5 turbo for now, the most economical way was to add a muffler. 16psi isnt exactly safe on a stock turbo, No matter what ECU you have.
So yes it restricted flow but in the intended manner.
10-27-07, 09:55 PM
#49
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So this contradicts your original statement ("as far as performance goes, single wins"), because you're using a single muffler system to deliberately restrict the engine's performance. Whatever your reasons are for doing that, it proves that muffler configuration is not what determines performance or flow.
BTW, my wastegate mods and custom DP allow my to run a modified S5 turbo with 3" exhaust and twin 70mm mufflers, and keep boost at 8psi.
BTW, my wastegate mods and custom DP allow my to run a modified S5 turbo with 3" exhaust and twin 70mm mufflers, and keep boost at 8psi.
