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Thinking out side the box 370z SINGLE TIP EXHAUST

Sounds okay. Kinda average, to be honest, maybe even slightly below average. That's just my subjective opinion, of course; I prefer a deeper sound. But I'd be more interested to

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Old 11-11-2009, 07:18 AM   #1 (permalink)
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Sounds okay. Kinda average, to be honest, maybe even slightly below average. That's just my subjective opinion, of course; I prefer a deeper sound. But I'd be more interested to see what kind of gains this design yields over stock on the dyno. Function trumps form, in my books.
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Old 11-12-2009, 04:31 AM   #2 (permalink)
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A little loud for my tastes but that is what a single should sound like. Reminds me of the guys in my car club with de 350z's with exhausts except with more awesomeness up top thanks to the vq37. I'm going to go from the dual 2.5 header outlets through a custom y pipe into single 3.5 to the back. i wan't to see what one large tip the size of the rear valence area looks like before i decide on tips. Three problems so far- 1. spent all my exhaust money on fines 2. hard to snake 3.5 out past the axles without being a scrape machine 3. Hard as hell to find good 3.5 stainless and mufflers. Thinking of using a borla race straight through in the middle and maybe something at the back. It's still at bar napkin stage.
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Old 11-12-2009, 11:57 AM   #3 (permalink)
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Sounds okay. Kinda average, to be honest, maybe even slightly below average. That's just my subjective opinion, of course; I prefer a deeper sound. But I'd be more interested to see what kind of gains this design yields over stock on the dyno. Function trumps form, in my books.
+1 but I dont have a race car. So 5hp aint worth the less than spectacular sound.
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Old 11-13-2009, 02:09 AM   #4 (permalink)
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5hp aint worth the less than spectacular sound.
But add the weight savings of a single vs a dual, and then maybe the equation improves?

There is a ton of conflicting info on the web about this subject (single vs dual), and a ton of outright BS (one site goes so far as to say that exhaust gas does not flow backwards at all) but I've always understood that a properly designed single is no more or less efficient or powerful than a properly designed dual. It still comes down to balancing flow and velocity with the correct diameter, bends, welds and design.
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Old 11-13-2009, 12:45 PM   #5 (permalink)
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But add the weight savings of a single vs a dual, and then maybe the equation improves?

There is a ton of conflicting info on the web about this subject (single vs dual), and a ton of outright BS (one site goes so far as to say that exhaust gas does not flow backwards at all) but I've always understood that a properly designed single is no more or less efficient or powerful than a properly designed dual. It still comes down to balancing flow and velocity with the correct diameter, bends, welds and design.
Yeah weight savings does tip the scales a little bit in favor of the single pipe. Maybe something to look at later down the road. Although longtube headers running straight all the way back would be better in my opinion. Throw a couple of v-banded cats in the middle for daily driving and then replace them with V-banded straight pipes for the track. I think I just made a mess in my pants and I figured out what I'm eventually going to do with my exhaust...

Last edited by RCZ; 11-13-2009 at 12:48 PM.
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Old 11-13-2009, 01:49 PM   #6 (permalink)
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Originally Posted by 370Zsteve View Post
But add the weight savings of a single vs a dual, and then maybe the equation improves?

There is a ton of conflicting info on the web about this subject (single vs dual), and a ton of outright BS (one site goes so far as to say that exhaust gas does not flow backwards at all) but I've always understood that a properly designed single is no more or less efficient or powerful than a properly designed dual. It still comes down to balancing flow and velocity with the correct diameter, bends, welds and design.
The way I look at it, lot of what determines the benefits of single vs. dual comes down to the diameter of the piping and the material used. If my theory is correct, a titanium single with 3"/4" main diameter should have better results when compared to a 2.5"/2.75" stainless steel dual exhaust.

When comparing theoretical exhaust designs, there are simply too many lurking variables to really draw a good conclusion. A better question to ask, would be something along the lines of "Is the Amuse R1000 single better than the Amuse RS-Silent in terms of performance?" or "Is the Robispec exhaust better than the F.I. or Stillen ehxaust?"

Just my .02.

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Yeah weight savings does tip the scales a little bit in favor of the single pipe. Maybe something to look at later down the road. Although longtube headers running straight all the way back would be better in my opinion. Throw a couple of v-banded cats in the middle for daily driving and then replace them with V-banded straight pipes for the track. I think I just made a mess in my pants and I figured out what I'm eventually going to do with my exhaust...


I heard V-band and longtube..

I look forward to reading your journal updates

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