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Difference in SLP exhausts

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Old Jun 23, 2012 | 12:39 PM
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Default Difference in SLP exhausts

I am looking to buy the slp loud mouth cat-back because my hooker cat-back is way to quiet. I noticed that theres the Loud Mouth and the Loud Mouth II. Whats the difference between the two?
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Old Jun 23, 2012 | 12:47 PM
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1 is really loud and raspy 2 is quieted down
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Old Jun 23, 2012 | 12:58 PM
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Do you have Cats? If you don't, don't get the loud mouth. it'll be too raspy. But the loudmouth 2 will be alright.
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Old Jun 23, 2012 | 01:09 PM
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They will both be raspy with longtubes and no cats. If you don't plan on doing headers, get the LM1. Also, people, like myself, replace the SLP resonator with a different type of bullet muffler, in my case the Borla XR-1.

The differences between them is the resonator. The LM1 has no baffling while the LM2 has some baffling.
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Old Jun 23, 2012 | 01:43 PM
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To answer your question regarding the difference, they are exactly the same systems except for the "mufflers" on the LM1 the pipe is enlarged but there is NOTHING inside it. Where as the LM 2 is still a straight through design but it has some material inside the muffler that is suppose to restrict noise. Honestly I've heard both and there really isn't a ton of difference, either way it will be loud.
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Old Jun 23, 2012 | 07:29 PM
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lm1 sounds better imo
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Old Jun 24, 2012 | 07:00 AM
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+1 for the LM1! I have it and I thinks it's the best sounding exhaust for a stock Fbody... My buddy has a Borla and he thinks mine sounds better than his... I dnt have LTs on mine yet so idk about the Rasp part.
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Old Jun 26, 2012 | 12:50 PM
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I have the SLP Power Flo on mine, which is basically the LM2 with two mufflers mounted after the axle. I like the sound, especially after installing headers. Really woke it up.
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Old Jun 26, 2012 | 05:09 PM
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Originally Posted by BAD2000TA
I have the SLP Power Flo on mine, which is basically the LM2 with two mufflers mounted after the axle. I like the sound, especially after installing headers. Really woke it up.
Do you happen to have any sound clips?

I have a LM1 with ORY and LT's and I HATE it. WAY too loud.
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Old Jun 26, 2012 | 05:15 PM
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Originally Posted by MikeWS6
lm1 sounds better imo
I agree
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Old Jun 26, 2012 | 05:58 PM
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The main question here is, are you still stock? If so... I have 2 sound clips for you.
My setup is as follows... all stock except for lid. Video one is stock manifolds, no cats, stock y pipe, LM1 to tips outback. Video 2 is stock manifolds, no cats, stock y pipe, LM2 dumped. Enjoy.


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Old Jun 26, 2012 | 09:55 PM
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Originally Posted by streetknight2
Do you happen to have any sound clips?

I have a LM1 with ORY and LT's and I HATE it. WAY too loud.
Not currently, but I'll put one together and post it up.
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Old Jun 27, 2012 | 06:40 AM
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Originally Posted by BAD2000TA
I have the SLP Power Flo on mine, which is basically the LM2 with two mufflers mounted after the axle. I like the sound, especially after installing headers. Really woke it up.
Originally Posted by streetknight2
Do you happen to have any sound clips?

I have a LM1 with ORY and LT's and I HATE it. WAY too loud.
Here you go SLP PowerFlo on my stock car.
I have since tucked the Dual/Dual tips up tighter I know they're sitting a little low in the video, it was my first exhaust install.


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Old Jun 28, 2012 | 08:49 AM
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I have my LM2 resonator dumped after my ORY. It got rid of the drone and the rasp. I'm adding a turn down "tip" though to see if I can get that rumble out from under the car
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