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Going from True Duals to Y and GMMG

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Old Dec 14, 2010 | 08:57 PM
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Default Going from True Duals to Y and GMMG

I have had my duals for several years now and I want to change my setup. I love the way my exhaust sounds now, but the drone at cruise RPMs is getting old and I'm tired of dragging my exhaust on driveway entrances and other things that I would clear in any other car with no problem. I've kept the car stock ride height for this reason. I have tried running pipes out the back with them and they just don't sound the same. So, I'm going to a Y-pipe/catback setup.

I had this in mind, reuse my jet hot headers, cut off the three bolt flanges, have my friend custom fab me a slip fit 3" y-pipe, use the mufflex y-pipe hanger, a flowmaster 3" to 3.5" merge collector with a flowmaster 3.5" to 3" reducer venturi into the GMMG. I plan to do some sort of CME exhaust setup as well, haven't decided.

What I would like to know is, who makes quality band clamps that I can use for my y-pipe to header connection? Who makes a panhard bar relocation kit? When I first got my car, I put a 3" flowmaster catback on it(big mistake I know ) and I had little to no clearance over the axle around the panhard bar. It squeaked and rattled from time to time and I do not want to dimple my new GMMG exhaust to clear this area.

If anyone has video clips of a bolt-on automatic car with a similar exhaust setup, I would love to hear it.
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Old Dec 14, 2010 | 10:18 PM
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http://www.youtube.com/watch?v=KLMoqvVZWI4
hope this helps
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Old Dec 14, 2010 | 10:35 PM
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Here's all I could find on my computer. Forgive the gravel sounds, it was an impromtu video I made on my paren'ts farm.....and lawn. Just a bolt on TA with American Racing headers and y-pipe, GMMG, and a 30 inch stainless works muffler in the i-pipe to help with rasp.

http://www.youtube.com/watch?v=lSzM38-5QwI
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Old Dec 15, 2010 | 08:00 PM
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Thanks for the videos
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Old Dec 16, 2010 | 01:14 AM
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raaaasp. OP you should have an easier time with the rasp because of the fm merge. but even so i think you will have more than you'll like.
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Old Dec 16, 2010 | 02:28 AM
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Here's mine!
http://www.youtube.com/watch?v=n29_kvGQKzg
http://www.youtube.com/watch?v=gQImq3ZIcbQ
http://www.youtube.com/watch?v=V-Cz5mmThAc
http://www.youtube.com/watch?v=pocrNvLbyys
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Old Dec 16, 2010 | 06:57 AM
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^ your exhaust sounds good man,I just think the gmmg is a better sounding loudmouth,
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Old Dec 16, 2010 | 10:51 AM
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Originally Posted by brian_rs/ss
raaaasp. OP you should have an easier time with the rasp because of the fm merge. but even so i think you will have more than you'll like.
This.

Without cats, the GMMG sounds like total dogshit. WITH cats, it sounds great.
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Old Dec 16, 2010 | 11:04 AM
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Originally Posted by Damian
This.

Without cats, the GMMG sounds like total dogshit. WITH cats, it sounds great.
yup and if you cam it with out cats it gets even worse.
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Old Dec 16, 2010 | 01:40 PM
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SSsmokin whats your setup?
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Old Dec 16, 2010 | 03:23 PM
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Pacesetter headers and Y with high-flow cat added, custom cat back, dual Dynomax Bullets, CME

http://www.youtube.com/watch?v=gkR7KBlZ_HE
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Old Dec 16, 2010 | 05:34 PM
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Originally Posted by Damian
This.

Without cats, the GMMG sounds like total dogshit. WITH cats, it sounds great.
Damian,

What cats would you recommend? Random technologies? When I do the exhaust this time, I want to do it right the first time so I won't have to go back and change stuff later.
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Old Dec 16, 2010 | 05:56 PM
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I just put Magnaflow cats on my car. The body is 4" and with how crappy the y pipe fits the cats are the last things to scrape. I had them installed directly off the headers.
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Old Dec 16, 2010 | 06:44 PM
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Originally Posted by Damian
This.

Without cats, the GMMG sounds like total dogshit. WITH cats, it sounds great.
What? I have a huge cam and no cats and love how it sounds. Now you have me wondering what it would sound like with cats...
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Old Dec 16, 2010 | 06:47 PM
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Originally Posted by Trl_ws6
What? I have a huge cam and no cats and love how it sounds. Now you have me wondering what it would sound like with cats...
now let me ask you this...have you ever been riding behind your car when it's at WOT? try giving your keys to somebody you trust and let them floor it, see how it sounds.
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Old Dec 16, 2010 | 07:07 PM
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Here it is before I had the muffler put in the i-pipe. The rasp was unreal at normal driving rpm's. Listening to the radio was almost impossible and forget trying to answer a phone so that's why I put the muffler in.

PS: I know it was a shitty burnout.

http://www.youtube.com/watch?v=gNAa3qP08ms
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Old Dec 16, 2010 | 08:14 PM
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Originally Posted by 97camarozguy
Here it is before I had the muffler put in the i-pipe. The rasp was unreal at normal driving rpm's. Listening to the radio was almost impossible and forget trying to answer a phone so that's why I put the muffler in.

PS: I know it was a shitty burnout.

http://www.youtube.com/watch?v=gNAa3qP08ms
Did you have cats?
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Old Dec 16, 2010 | 08:44 PM
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Originally Posted by 67SS&99SS
Did you have cats?
Nope. I wish I would have gone with cat's when I bought the exhaust though.
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Old Dec 16, 2010 | 09:26 PM
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you don't need cats. cats make you slower.

*AHEMsigAHEM*
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Old Dec 16, 2010 | 09:45 PM
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Originally Posted by brian_rs/ss
you don't need cats. cats make you slower.

*AHEMsigAHEM*

well said
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