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videos of my 91 Z with an SLP Loudmouth

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Old Apr 23, 2009 | 05:58 PM
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SLP IROC-Z's Avatar
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From: Salem, NH
Car: 1999 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23 10 Bolt
videos of my 91 Z with an SLP Loudmouth

91 Z 305TPI 5 Speed bone stock w/189k with an slp loudmouth, no bullet muffler or resonator, straight all the way after the cats.
http://www.youtube.com/watch?v=CviYxbbqN2I
http://www.youtube.com/watch?v=Dv8bv2XZyyg
http://www.youtube.com/watch?v=tIK6SxhDWgg
http://www.youtube.com/watch?v=zLa4O6QoQ00
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Old Apr 23, 2009 | 06:02 PM
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Re: videos of my 91 Z with an SLP Loudmouth

Sounds kind of like a rice rocket w/5 inch tip........NOT! Sounds good.
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Old Apr 23, 2009 | 06:06 PM
  #3  
zNucleaRz's Avatar
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From: Newport News, Va
Car: 84 Z28
Engine: GMPP 350 HO
Transmission: 700R4 + Shift Kit
Axle/Gears: Auburn Posi; Richmond 3:73 Gears
Re: videos of my 91 Z with an SLP Loudmouth

I think it sounds pretty good; definitely loud but good. at WOT kind of crackly but not ***** sounding to me you can definitely tell its a v8.
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Old Apr 23, 2009 | 10:57 PM
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Pocket's Avatar
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Car: 91 Trans Am
Re: videos of my 91 Z with an SLP Loudmouth

No resonator? You mean its strait piped

The resonator is the fat section in the pipe near your rear seats. Hold it up to the light and youll see right thru it

I also have LM1 on my bird and it sounds like that. You camera isnt the best at recording sounds thou
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Old Apr 23, 2009 | 11:32 PM
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Re: videos of my 91 Z with an SLP Loudmouth

Sounds good. Why didn't you install the resonator? I am going to run the same exhaust. But I'm going to use a Borla XR1 muffler in place of the resonator.
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Old Apr 24, 2009 | 01:38 AM
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SLP IROC-Z's Avatar
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From: Salem, NH
Car: 1999 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23 10 Bolt
Re: videos of my 91 Z with an SLP Loudmouth

my buddy gave me the LM tail section, so i just mated that to my 3" flowmaster intermediate pipe. he had to sawzall the LM intermediate pipe off to get it off his car so it wasnt reusable. the slp resonator doesnt do anything anyway, its just a hollow peice of 4" tubing. eventually ill be getting headers and off road y pipe, so im going to have to use a muffler in the intermediate pipe, a dynomax 6" round ultra flow most likely. that camera isnt the greatest for sound quality, after uploading the files to youtube they sounded even worse. car definitly sounds better in person, but atleast it gives people an idea of what to expect if they want to try one.

Last edited by SLP IROC-Z; Apr 24, 2009 at 01:52 AM.
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Old Apr 24, 2009 | 03:03 AM
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IROCThe5.7L's Avatar
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Re: videos of my 91 Z with an SLP Loudmouth

Originally Posted by SLP IROC-Z
that camera isnt the greatest for sound quality, after uploading the files to youtube they sounded even worse. car definitly sounds better in person, but atleast it gives people an idea of what to expect if they want to try one.

I think it sounds fine, thanks for sharing. Did you cut and weld the hangers to fit your car?
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Old Apr 24, 2009 | 12:42 PM
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Re: videos of my 91 Z with an SLP Loudmouth

I have the LM1 system on my car but with a Bullet. I tried it without any muffler/resonator and it was WAY too raspy for my liking. This summer I was going to use a Borla Sportsman muffler in place of the Bullet but couldn't pass up on a deal for 2 3" chambered powersticks so I think I'll use 1 of those in place of the bullet for now until I can fab up a dual system. I'll be posting vids/pics of it once it's done of course.


I suggest running some form of muffler/resonator. It will make the sound more crisp, get rid of some of the raspyness and make the tone alot better inside the car. Sounds good though! Headers will help tons!
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Old Apr 25, 2009 | 11:00 PM
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From: Arizona
Car: 92 camaro 25th anniversary
Engine: 305 tbi
Transmission: automatic
Re: videos of my 91 Z with an SLP Loudmouth

Originally Posted by SLP IROC-Z
91 Z 305TPI 5 Speed bone stock w/189k with an slp loudmouth, no bullet muffler or resonator, straight all the way after the cats.
http://www.youtube.com/watch?v=CviYxbbqN2I
http://www.youtube.com/watch?v=Dv8bv2XZyyg
http://www.youtube.com/watch?v=tIK6SxhDWgg
http://www.youtube.com/watch?v=zLa4O6QoQ00
So where exactly is the SLP loudmouth? Or does it just have a cat?
Sorry don't understand. Its me not you!!
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Old Apr 25, 2009 | 11:44 PM
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Car: '91 Camaro Z28
Engine: 383 Vortec HSR
Transmission: Pro-Built 700-R4;Vig 4000 stall
Axle/Gears: Moser M9 9" / 3.89
Re: videos of my 91 Z with an SLP Loudmouth

Sounds loud. I helped a friend install a loudmouth on his LT1 car. That resonator is pretty straight through. I'm surprised you didn't get the resonator from him, sawzalled or not.
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