Miata Turbo Forum - Boost cars, acquire cats.

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-   DIY Turbo Discussion (https://www.miataturbo.net/diy-turbo-discussion-14/)
-   -   Quieting down 3" exhaust. Suggestions? (https://www.miataturbo.net/diy-turbo-discussion-14/quieting-down-3-exhaust-suggestions-71964/)

18psi 04-04-2013 11:13 AM

There is no such thing as too quiet in our cars. Our cars are LOUD as is.


Maybe I'm just getting old...QQ

Braineack 04-04-2013 11:19 AM

I told my wife I'd like a corvette yesterday and she said it's because im getting old.

18psi 04-04-2013 11:28 AM

I made a thread on another forum about my vette. I named it "midlife crisis-mobile".

I'm not in denial bro.

Leafy 04-04-2013 11:29 AM


Originally Posted by 18psi (Post 997566)
I made a thread on another forum about my vette. I named it "midlife crisis-mobile".

I'm not in denial bro.

where as brain is like Cleopatra, the queen of de-Nile.

Braineack 04-04-2013 11:33 AM

Why am I in denial?

thenuge26 04-04-2013 11:53 AM

2 Attachment(s)
My plan is to run the big fucking muffler, and if I want more loudness I'll do this with an old TB or something:

Landrew 04-04-2013 11:54 AM


Originally Posted by 18psi (Post 997566)
I made a thread on another forum about my vette. I named it "midlife crisis-mobile".

I'm not in denial bro.

Let's see this vette, is there a thread on here about your other daily?

18psi 04-04-2013 12:08 PM

3 Attachment(s)

Originally Posted by thenuge26 (Post 997579)
My plan is to run the big fucking muffler, and if I want more loudness I'll do this with an old TB or something:

ORRR,

Just add a connection there and unbolt as needed :party:

Originally Posted by Landrew (Post 997580)
Let's see this vette, is there a thread on here about your other daily?

Its nothing special. 04 Base auto with 2.73 rear.

*edit: moved pics so its not as bad of a thread jack:
https://www.miataturbo.net/build-thr...39/#post884831

/threadjack

Braineack 04-04-2013 12:10 PM

at least the corvette i pointed out was a zr1.

hornetball 04-04-2013 12:58 PM

Rule of thumb: You'll spend much less money and will be much happier with you're modded car in the long run if you just spend the money to do it right the first time. That's one of the great things about this forum -- learning from others.

And before accusing me of being a "holier than thou" type, consider that I routinely ignore my own advice because I'm so darn cheap (and, yes, end up spending more to fix stuff I cheaped out on).

One of my upcoming fixes (after I swap my diff) is a decent exhaust. It WILL have a Magnaflow.

I did a G8 instead of a Corvette. Had too many 2 seat cars. Plus, it was cheaper.

concealer404 04-04-2013 01:01 PM


Originally Posted by duffbuster243 (Post 997551)
unfortunately, I haven't have an opportunity to hear any for myself. Just though videos posted which sucks to fully judge, I know.

Next time turn up the volume.

9671111 04-05-2013 05:05 PM

*

VanMSM 04-07-2013 12:55 AM


Originally Posted by duffbuster243 (Post 997551)
unfortunately, I haven't have an opportunity to hear any for myself. Just though videos posted which sucks to fully judge, I know.

I find my straight through 3" with the Magna 5x11x22 to still be too loud inside the car. From the outside at the dyno it sounds really good.

https://www.miataturbo.net/members/v...nstalled-1255/

Braineack 04-07-2013 08:56 AM

do you have a cat?

Mine passes the wife test, but it's still no stock muffler.

miatauser884 04-07-2013 11:43 AM

I had planned on getting a plastic bag, filling it full of expanding foam, and placing it under the parcel shelf to see if that helped deaden the sound. I too feel that the car is too loud at certain RPMs. I think it is just the resonant frequency that I dislike, because if I increase the rpm a bit it is very quiet at cruise.

I want a new stingray

Braineack 04-07-2013 11:55 AM

I have a cat and a resonator. I have no drone or resonance whatsoever. It could stand to be a little quieter of an exhaust, but it's better than most.

miatauser884 04-07-2013 12:04 PM


Originally Posted by Braineack (Post 998418)
I have a cat and a resonator. I have no drone or resonance whatsoever. It could stand to be a little quieter of an exhaust, but it's better than most.

I do as well, but at 2700-3000rpm it's a little loud.

OP, have you checked to ensure your exhaust isn't vibrating against anything under the car. Mine was touching the 5 point harness eye bolt under the car. It made it sound like the exhaust, but once I shortened the bolt the noise was significantly reduced

Amellrotts 04-07-2013 02:17 PM

Brain,
What cat and resonator are you using? I hope to build my exhaust soon and know that I want to follow the well beaten path.....

VanMSM 04-07-2013 03:55 PM


Originally Posted by Braineack (Post 998377)
do you have a cat?

Mine passes the wife test, but it's still no stock muffler.

Yeah, I have a Magnaflow high flow metallic CAT. It still drones a bit too much at around 3000rpm. My noise tolerance is lowering as I age.

18psi 04-07-2013 04:06 PM


Originally Posted by VanMSM (Post 998443)
Yeah, I have a Magnaflow high flow metallic CAT. It still drones a bit too much at around 3000rpm. My noise tolerance is lowering as I age.

+1000


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