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Old Dec 9, 2010 | 12:36 AM
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Default slp loudmouth

i was lookin at the inside of a loudmouth muffler the other day and it necks down to be pretty narrow inside. does anyone know if the loudmouth rectricts flow?
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Old Dec 9, 2010 | 01:01 AM
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Originally Posted by 02sslayer
i was lookin at the inside of a loudmouth muffler the other day and it necks down to be pretty narrow inside. does anyone know if the loudmouth rectricts flow?
Where you looking at a LM2? The LM2 has packing on the inside. LM1 doesn't! That's what I have.

PS don't use the LM2! You buy LoudMouths to be loud!

Last edited by WS6 Rampage; Dec 9, 2010 at 01:06 AM.
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Old Dec 9, 2010 | 09:35 AM
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I don't know about the already setup system that SLP sells but the mufflers/resonators themselves are as none restrictive as you can get. They are HOLLOW!!! I have a custom setup, true dual to an X pipe then into 2 LM1's then under the axle and out into 2 3" chrome slash tips. Sounds AMAZING!! And I am about to put on a lid, smooth bellow, Pacesetter ceramic LT's and Magnaflow Hi-Flow heavy metal cats. Then it will be loud as HELL!!! Can't wait.........
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Old Dec 9, 2010 | 02:08 PM
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^ start saving cash for exhaust tickets,the slp resonators flow better than anything only because there a straight threw design,but they are loud,my lm1,ms4 cam,ory,longtubes was crazy loud ,
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Old Dec 9, 2010 | 02:10 PM
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I don't know how you could look into a lm1 resonator and think it would be restrictive,you can see threw it lol
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Old Dec 9, 2010 | 03:27 PM
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Originally Posted by BOBS99SS
I don't know how you could look into a lm1 resonator and think it would be restrictive,you can see threw it lol
I think he was looking at an LM2, NOT a LM1.
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Old Dec 9, 2010 | 03:29 PM
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Originally Posted by BOBS99SS
I don't know how you could look into a lm1 resonator and think it would be restrictive,you can see threw it lol
well it may have been an lm1 then, cause the one i looked at necked down to about 2".
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Old Dec 9, 2010 | 03:36 PM
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Must of been an LM2 because on the LM1 its the opposite it actually gets wider inside and its all hollow "Resonator"
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Old Dec 9, 2010 | 03:49 PM
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Originally Posted by BOBS99SS
^ start saving cash for exhaust tickets,the slp resonators flow better than anything only because there a straight threw design,but they are loud,my lm1,ms4 cam,ory,longtubes was crazy loud ,
I have never been pulled for it. Officers here in VA don't pull you for stuff like that....
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Old Dec 9, 2010 | 08:24 PM
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Originally Posted by PwrHngryLT1
Must of been an LM2 because on the LM1 its the opposite it actually gets wider inside and its all hollow "Resonator"
That's what I have. LM1s are hollow. You'd know if you were looking at one. It's a frig'n empty can!! Haha!
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Old Dec 9, 2010 | 10:50 PM
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The LM2 DOES neck down inside. here is a pic.



and here is the LM1 resonator for comparison.

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Old Dec 10, 2010 | 02:25 PM
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That should clear things up...
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Old Dec 10, 2010 | 02:32 PM
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Yup, but the necking shouldn't kill power that bad. When you are getting on it, the exhaust is flowing enough that the baffles don't restrict much. They do more wuieting at idle and low speeds(low exhaust flow).
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Old Dec 10, 2010 | 06:53 PM
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Originally Posted by ZYA_LTR
Yup, but the necking shouldn't kill power that bad. When you are getting on it, the exhaust is flowing enough that the baffles don't restrict much. They do more wuieting at idle and low speeds(low exhaust flow).
Not entirely true.... I had LM2's on my true dual LS1 setup, even at high rpm they are way quieter than the LM1's I swapped them for. Just saying from experience, the LM2's have a nice sound but if you want loud AND sound then go with LM1's......
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Old Dec 10, 2010 | 07:30 PM
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how bout neither.
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Old Dec 10, 2010 | 07:38 PM
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No, it won't restrict flow, their mufflers are as straight through as you can get. If you want sound quality, they're not for you but if you want obnoxiously loud then they're for you...
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Old Dec 11, 2010 | 12:15 PM
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I think they do that to kinda force the noise into the packing. I really don't think it narrows the flow path that much to hurt performance. Only a flow bench test could really tell though.
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Old Dec 11, 2010 | 01:13 PM
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You were looking at a LM2. IMO, don't go with either LM setup, unless you like loud with no tone. Many other options out there that sound nice, where LM is just loud...but for some people getting noticed is why they own the car.


I should add, LM's are ok when it's just a catback, but adding ORY, headers, and esp a cam makes them raspier than ****.
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Old Dec 14, 2010 | 03:45 PM
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when i had my lm2 catback i thought it sounded great.
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Old Dec 18, 2010 | 10:15 PM
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Originally Posted by 02sslayer
when i had my lm2 catback i thought it sounded great.
I put my LM2 on not too long ago....first mod and they sound great on a stock car. oval tips ftw
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