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Duals vs single exit?

Old 03-09-2019, 02:16 PM
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RheaCo.08'350Z
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Default Duals vs single exit?


08' 350z HR 6 spd
I bought a 2008 HR. It has aftermarket dual exaust. It's loud, & at higher rpm's I don't like the sound. I haven't put it on a lift, but I can't find any name anywhere. I see a lot of Z's with the single exit exaust. Is it better, personal preference, what?

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Last edited by RheaCo.08'350Z; 03-09-2019 at 02:25 PM.
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Old 03-09-2019, 02:26 PM
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Spike100
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Duel is the most common.
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Old 03-09-2019, 03:05 PM
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A single exit exhaust will generally make more power than a dual on these cars. This is also dependent on the other sections of your exhaust. The single exhaust will also be louder than a dual.
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Old 03-09-2019, 03:35 PM
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The biggest advantage a single exhaust setup has is the weight. It's possible to drop 30-40 pounds and not lose much, if any, engine performance.
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Old 03-09-2019, 04:22 PM
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As earlier stated, singles are generally louder, when equal brands/quality are compared, depending on setup. I love my single. Stock muffler is a boat anchor.
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Old 03-09-2019, 05:20 PM
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The exhaust on the car you bought looks like an HKS replica exhaust. As for being "better" I guess it depends on how you look at it.
The previous responses do bring up good points.

Honestly what it's going to come down to is YOUR personal preference. There's dual exhausts that provide good performance but there's even more single exhausts that do it for cheaper. A lot of people prefer the dual look to keep everything proportioned in the rear and don't like the huge single exhausts. A bumper tuck will clean up the rear end when running a single exhaust though.

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Old 03-10-2019, 11:13 AM
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RheaCo.08'350Z
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Originally Posted by Chihuahuamaster View Post
A single exit exhaust will generally make more power than a dual on these cars. This is also dependent on the other sections of your exhaust. The single exhaust will also be louder than a dual.
LOUDER than a dual? Mine scare people. It's loud, & my wife hates it.
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Old 03-10-2019, 12:28 PM
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If you still want to replace the cat back, https://www.z1motorsports.com/exhaus...m-p-12120.html This is a remake of the original S-Tune but likely (too new to know) that it won't make any additional power over stock as it doesn't come with the real power making section of the original, the Y-Pipe. It sounds good though. A bit louder than stock and also retains the "VQ sound".

The other go-to exhaust systems that aren't terribly obnoxious: Invidia Gemini (dual) and Motordyne TDX2. Both sound good, minimal power gains without tune but quality systems at their price points.
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Old 03-10-2019, 02:06 PM
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Originally Posted by dkmura View Post
The biggest advantage a single exhaust setup has is the weight. It's possible to drop 30-40 pounds and not lose much, if any, engine performance.
Sweet baby Jesus - when I went from my stillen true dual to my single aluminum w/Ypipe I drop 60lbs ... I just about nut'd myself
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Old 03-12-2019, 04:44 AM
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Since you mention the dual exhaust is loud, and you don't like the sound, I would recommend finding a better dual exhaust. A single exit is going to have one muffler, as opposed to two, so will be louder at high rpm's. I think you have some options though. It does look like an HKS type exhaust on your z. You could sell it cheap to buy something you want, trade for stock exhaust, or you could install some resonators to tone it down. I would listen to sound clips on youtube, read some reviews, and also see what exhaust your z has before making any decisions.

I might be grasping at straws with this idea, but I'd get it up on jacks, and see if the prior owner installed test pipes (decats). If so, installing high flow cats would definitely help.
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Old 03-12-2019, 08:47 AM
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Originally Posted by RheaCo.08'350Z View Post
LOUDER than a dual? Mine scare people. It's loud, & my wife hates it.
1) Yes, singulars are louder then true dual.
2) Your exhaust may not have a muffler on it, which could be why it's louder.
3) 350z's are V6, they have higher pitched sounds, unlike the low growls you hear from V8s.
4) a stock 350z is hella loud as well...
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Old 03-12-2019, 03:53 PM
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RheaCo.08'350Z
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I guess I haven't heard a lot of loud 350z's cuz there ain't many around where I live & work. The one's you see usually seem stock. There's a few that have aftermarket exhaust. I'm going to the muffler shop tomorrow, & I'm going to see what's under there.

preciate it
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