Quieting down 3" exhaust. Suggestions? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 04-04-2013, 12:13 PM   #21
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,198
Total Cats: 2,584
Default

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


Maybe I'm just getting old...QQ
18psi is offline   Reply With Quote
Old 04-04-2013, 12:19 PM   #22
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

I told my wife I'd like a corvette yesterday and she said it's because im getting old.
Braineack is offline   Reply With Quote
Old 04-04-2013, 12:28 PM   #23
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,198
Total Cats: 2,584
Default

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

I'm not in denial bro.
18psi is offline   Reply With Quote
Old 04-04-2013, 12:29 PM   #24
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,093
Total Cats: 90
Default

Quote:
Originally Posted by 18psi View Post
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.
Leafy is offline   Reply With Quote
Old 04-04-2013, 12:33 PM   #25
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

Why am I in denial?
Braineack is offline   Reply With Quote
Old 04-04-2013, 12:53 PM   #26
Elite Member
iTrader: (2)
 
Join Date: Aug 2012
Location: Indianapolis
Posts: 3,325
Total Cats: 235
Default

My plan is to run the big ******* muffler, and if I want more loudness I'll do this with an old TB or something:
Attached Thumbnails
Quieting down 3" exhaust. Suggestions?-bigmufflerpluscutout.jpg  
thenuge26 is offline   Reply With Quote
Old 04-04-2013, 12:54 PM   #27
Senior Member
iTrader: (2)
 
Join Date: Sep 2009
Location: Edmonton, AB, Canada
Posts: 1,177
Total Cats: 27
Default

Quote:
Originally Posted by 18psi View Post
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?
Landrew is offline   Reply With Quote
Old 04-04-2013, 01:08 PM   #28
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,198
Total Cats: 2,584
Default

Quote:
Originally Posted by thenuge26 View Post
My plan is to run the big ******* 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
Quote:
Originally Posted by Landrew View Post
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
Attached Thumbnails
Quieting down 3" exhaust. Suggestions?-07.jpg   Quieting down 3" exhaust. Suggestions?-01.jpg   Quieting down 3" exhaust. Suggestions?-06.jpg  
18psi is offline   Reply With Quote
Old 04-04-2013, 01:10 PM   #29
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

at least the corvette i pointed out was a zr1.
Braineack is offline   Reply With Quote
Old 04-04-2013, 01:58 PM   #30
Elite Member
iTrader: (3)
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,010
Total Cats: 583
Default

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.
hornetball is offline   Reply With Quote
Old 04-04-2013, 02:01 PM   #31
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,465
Total Cats: 783
Default

Quote:
Originally Posted by duffbuster243 View Post
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.
concealer404 is offline   Reply With Quote
Old 04-05-2013, 06:05 PM   #32
Elite Member
iTrader: (10)
 
rccote's Avatar
 
Join Date: Jan 2008
Location: Buffalo NY
Posts: 1,595
Total Cats: 17
Default

fwiw I have a vibrant street power muffler and ultra quiet res. It's pretty much a straight shot 3" with no cat. It's very quiet even with the turbine out and a block off plate on the housing.
rccote is offline   Reply With Quote
Old 04-07-2013, 01:55 AM   #33
Junior Member
 
Join Date: Dec 2006
Location: Vancouver, BC
Posts: 131
Total Cats: 6
Default

Quote:
Originally Posted by duffbuster243 View Post
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.

VanMSM is offline   Reply With Quote
Old 04-07-2013, 09:56 AM   #34
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

do you have a cat?

Mine passes the wife test, but it's still no stock muffler.
Braineack is offline   Reply With Quote
Old 04-07-2013, 12:43 PM   #35
Elite Member
iTrader: (11)
 
Join Date: Feb 2009
Posts: 2,982
Total Cats: 10
Default

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
miatauser884 is offline   Reply With Quote
Old 04-07-2013, 12:55 PM   #36
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

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.
Braineack is offline   Reply With Quote
Old 04-07-2013, 01:04 PM   #37
Elite Member
iTrader: (11)
 
Join Date: Feb 2009
Posts: 2,982
Total Cats: 10
Default

Quote:
Originally Posted by Braineack View Post
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
miatauser884 is offline   Reply With Quote
Old 04-07-2013, 03:17 PM   #38
Senior Member
iTrader: (2)
 
Join Date: Oct 2011
Location: Hickory, NC
Posts: 683
Total Cats: 3
Default

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.....
Amellrotts is offline   Reply With Quote
Old 04-07-2013, 04:55 PM   #39
Junior Member
 
Join Date: Dec 2006
Location: Vancouver, BC
Posts: 131
Total Cats: 6
Default

Quote:
Originally Posted by Braineack View Post
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.
VanMSM is offline   Reply With Quote
Old 04-07-2013, 05:06 PM   #40
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,198
Total Cats: 2,584
Default

Quote:
Originally Posted by VanMSM View Post
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
18psi is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Transmission Heat Shield Thread patsmx5 General Miata Chat 46 06-06-2016 11:27 AM
Hey everyone another n00b here Big_gumby Meet and Greet 80 10-05-2015 05:06 PM
1996 Turbo Build Goldwar DIY Turbo Discussion 2 09-29-2015 10:20 AM
The "other" spool question stefanst DIY Turbo Discussion 44 09-28-2015 08:16 PM
Mystery Engine Trouble. Halp, mt.net! vehicular General Miata Chat 12 09-14-2015 04:17 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 08:33 PM.