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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 08-23-2009, 11:29 AM   #1
SuperSport2010
 
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Which is LOUDER? - SLP LM II v. GMPP "Offroad"

Curious as to those who may have been able to compare these in person. I have SLP LM II and it sounds terrific - no drone but nice & deep wherein you hear V8 rumble in the cabin any time you accelerate. I believe SLP LM II is the winner, but wondering how GMPP "Offroad" sounds - and also how much of the GMPP you actually hear in the cabin while driving. Thanks!
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Old 08-23-2009, 11:45 AM   #2
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I think, from videos, SLP II

However, I'm bias to MBRP now. They have an Axle back system as well and louder than both and sounds way better IMO. you can get them from www.supertruckusa.com
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Old 08-23-2009, 01:38 PM   #3
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Quote:
Originally Posted by SuperSport2010 View Post
Curious as to those who may have been able to compare these in person. I have SLP LM II and it sounds terrific - no drone but nice & deep wherein you hear V8 rumble in the cabin any time you accelerate. I believe SLP LM II is the winner, but wondering how GMPP "Offroad" sounds - and also how much of the GMPP you actually hear in the cabin while driving. Thanks!

You can hear the GMPP off road axle back big time inside the cabin when you accelerate. It also has a very deep low rumble to it. It's actually fairly aggressive. The videos really don't capture the sound at all.
I'm actually thinking with headers and high flow cats, the GMPP off road setup might be too loud for me. Because right now it sounds just about right
(Not too loud but noticeable).

I'm not 100% sure, but I think the GM "off road" mufflers are the same as the Borla S Type mufflers. They look and sound the same, and Borla makes the exhaust for GM.
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Old 08-23-2009, 06:06 PM   #4
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Go with LM I if you really like loud.
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