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GMMG or LM1?

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Old 12-13-2010, 12:49 AM
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Default GMMG or LM1?

which do you guys think I should throw on my SOM? I like loud cat backs by the way.
Old 12-13-2010, 01:15 AM
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LM1 is gonna be a little louder but not gonna have the tone. GMMG is decently loud but sounds reallyy good.
Old 12-13-2010, 10:22 AM
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LM1 is really loud. I love it. not to raspy either
Old 12-13-2010, 11:25 AM
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are the Lt1 and the Ls1 GMMG's the same and interchangable?
Old 12-13-2010, 11:34 AM
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im sure past the I pipe its all the same.
Old 12-13-2010, 04:03 PM
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I have an lm1. At first i loved it but over time it started to annoy the **** outta me. Now i wanna go with a magnaflow or borla.
Old 12-13-2010, 04:48 PM
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I love my GMMG! and they sound great on SOM cars haha
Old 12-13-2010, 05:31 PM
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Originally Posted by that_guy_02SS
I have an lm1. At first i loved it but over time it started to annoy the **** outta me. Now i wanna go with a magnaflow or borla.
I know what you mean. I'd go with a Magnaflow. I do like Borla's though.
Old 12-13-2010, 06:57 PM
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Originally Posted by 01SOMSS!
are the Lt1 and the Ls1 GMMG's the same and interchangable?
Fits 1982 and up Fbodie's, I have longtubes, an ory and a Gmmg catback. I love it! Rasp does anoy me sometimes. Thats prettymuch it.

GO with the GMMG!!!Its worth it.
Old 12-13-2010, 07:08 PM
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Neither. You like 'em loud? True duals with high flow cats into dual TSP Sweet Thunders!
Old 12-13-2010, 07:12 PM
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Originally Posted by ZexGX
Neither. You like 'em loud? True duals with NO cats into dual TSP Sweet Thunders!
^^^Fixed.
Old 12-13-2010, 07:21 PM
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Originally Posted by ss.slp.ls1
RASP IS GREAT
^^^Fixed.
Old 12-13-2010, 08:44 PM
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True about lm1 .. I got a lm2 it sounded sweet.. then a cammed my car and now its starting to annoy me.. im looking for a magnaflow
Old 12-14-2010, 10:47 AM
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Originally Posted by ZexGX
^^^Fixed.
I just don't see the point of cats on a modified car. I've worked on several cars with a nice true dual system with no cats and Magnaflow bullets and they didn't rasp. But I do prefer a nice custom y-pipe with a Flowmaster merge or better and a Magnaflow race muffler. Loud when it needs to be and has a nice tone. Not to mention that I need the clearance because all the cars I have owned have been slammed. You can always add an electric cutout to be annoying loud when necessary. My favorite is the DMH low profile cutouts that CaliforniaBoy5 has.
Old 12-14-2010, 11:42 AM
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My current setup I have an ory with a magnaflow and a bullet in the ipipe. The bullet took away a ton of rasp as compared to before the bullet. It also gave me a deeper tone and didnt really quiet it down very much.
Old 12-14-2010, 01:54 PM
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Originally Posted by 180ls1
My current setup I have an ory with a magnaflow and a bullet in the ipipe. The bullet took away a ton of rasp as compared to before the bullet. It also gave me a deeper tone and didnt really quiet it down very much.
Yeah, same thing resonators do. I have a resonator on my SS before it goes into the Chokemaster muffler (came that way). Soon I will cut it off and replace it with a Magnaflow.
Old 12-16-2010, 04:21 PM
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If you do duals with no cats with all mandrel bends and an X-pipe you won't have rasp. If you like loud, go for spirals. I've even seen people go with LM1 resonators instead of mufflers. Haven't heard it in person though.

If ur gonna stay away from duals, I vote for the GMMG
Old 12-16-2010, 10:06 PM
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I went the LM. had to pay some bills. the LM sounds pretty good,but I still want it louder. thinking about taking the resonator out...lol!
Old 12-16-2010, 10:20 PM
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Originally Posted by that_guy_02SS
I have an lm1. At first i loved it but over time it started to annoy the **** outta me. Now i wanna go with a magnaflow or borla.
Same here. I got tired of how loud it is, and the drone. My Dynomouth is much quieter and bearable.



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