GMMG CAT BACK Decibal level??
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Joined: Mar 2006
Posts: 53
GMMG CAT BACK Decibal level??
i want to purchase a gmmg catback system on my bone stock z28. I will have the stock manifolds,and y pipe, just the cat back will be changed. How many more decibels approximatley will this be over stock at idle and WOT. i love the sound of gmmg but i want the noise level to be as near as stock as possible? Any suggestions?
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Joined: Dec 2003
Posts: 2,315
From: NY...what a bad place for a nice car
Re: GMMG CAT BACK Decibal level??
Originally Posted by CAMAROZ28AQUINO
i want to purchase a gmmg catback system on my bone stock z28. I will have the stock manifolds,and y pipe, just the cat back will be changed. How many more decibels approximatley will this be over stock at idle and WOT. i love the sound of gmmg but i want the noise level to be as near as stock as possible? Any suggestions?
ull never have this exhaust close to stock
keeping the manifolds willl help tho
u dont really hear it during part throttle or cruising, but once u open up it will be much louder than stock and sounds sooo much better
headers will change everything and its soo much better
if ur looking to not have a loud car just stay stock and do no upgrades
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Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
Re: GMMG CAT BACK Decibal level??
What year is your Z28?
It sounds different on the LT1 cars than it does on the LS1's, but you didn't tell us which one you have.
Why not add a "signature" with the basic info about your car.... year, tranny type, major mods, etc. That will increase your chances of getting accurate responses.
It sounds different on the LT1 cars than it does on the LS1's, but you didn't tell us which one you have.
Why not add a "signature" with the basic info about your car.... year, tranny type, major mods, etc. That will increase your chances of getting accurate responses.
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Joined: Aug 2001
Posts: 1,983
From: Jacksonville,fla
Re: GMMG CAT BACK Decibal level??
Being that you have a pretty much stock exaust, its not going to be that bad. But if and when you get headers and decide not to have a cat it gets real loud. Most people that I know who have them put a resonator in the I-pipe to cut down on the drone at part throttle. But other than that its pretty aswome sounding system.
Thread Starter
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Joined: Mar 2006
Posts: 53
Re: GMMG CAT BACK Decibal level??
Originally Posted by Injuneer
What year is your Z28?
It sounds different on the LT1 cars than it does on the LS1's, but you didn't tell us which one you have.
Why not add a "signature" with the basic info about your car.... year, tranny type, major mods, etc. That will increase your chances of getting accurate responses.
It sounds different on the LT1 cars than it does on the LS1's, but you didn't tell us which one you have.
Why not add a "signature" with the basic info about your car.... year, tranny type, major mods, etc. That will increase your chances of getting accurate responses.
The z28 is a 1998, LS1 equipped, so do you guys think gmmg is worth it, anyone know if they ship to Canada??
GMMG
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Joined: Sep 1999
Posts: 521
Re: GMMG CAT BACK Decibal level??
I was told it's about $225 to ship it to Canada by UPS ground. UPS will add another $60 in charges on top of that. It's free shipping if you live in the US. I'd recommend shipping it to a friend south of the border.
Assuming you ship it to your door, you're looking at about $1200 for the standard setup and $1400 for the oval tips setup.
Assuming you ship it to your door, you're looking at about $1200 for the standard setup and $1400 for the oval tips setup.
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Joined: Sep 2005
Posts: 2,271
From: Bahrain
Re: GMMG CAT BACK Decibal level??
Originally Posted by rlax31
i've seen people say it dynos 3 less hp then open cutout, so yes
Wouldn't trade mine for another
Wouldn't trade mine for another
Anyways I plan on making my own version. There is no way I would pay what theyre asking. It's insane.
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Joined: Feb 2001
Posts: 1,746
From: Hemet, CA
Re: GMMG CAT BACK Decibal level??
It's never gonna be anywhere near stock sound levels...
Here's a video I made for people that were sending me PMs wanting to hear the car in various situations:
http://videos.camaroz28.com/search/G...8b1b3dd6c6.htm
Oh and Gord, I still owe you those pics of the exhaust, sorry
Here's a video I made for people that were sending me PMs wanting to hear the car in various situations:
http://videos.camaroz28.com/search/G...8b1b3dd6c6.htm
Oh and Gord, I still owe you those pics of the exhaust, sorry