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Go Back   Chevy and GMC Duramax Diesel Forum > Chevy / GMC Duramax 04.5-05 LLY Forum > 04.5-05 LLY Performance Parts Discussion
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04.5-05 LLY Performance Parts Discussion Discussion of Performance Parts For the 04.5-05 LLY Duramax Trucks No Advertising

 
       

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Old 10-18-2008, 01:18 AM   eBay Motors   #1 (permalink)
chevymakesitizuzushakesit
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stright pipe not loud enough

i just stright piped the rig and my gosh is it quiet u barley here the turbo a little grunt of engine but i have stock size tubing i hope my 4 inch system will make it way louder i hate stock exhaust
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Old 10-18-2008, 01:20 AM   eBay Motors   #2 (permalink)
daddysLBZ
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Is the cat gone too?Mine sounds pretty good without either.I was shocked at how quiet it was afterwards though...
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Old 10-18-2008, 01:34 AM   eBay Motors   #3 (permalink)
dmax diesel
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Yeah the bigger the exhaust the deeper the sound
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Old 10-18-2008, 05:54 AM   eBay Motors   #4 (permalink)
Meyerperformance
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And it wont get loud until about 24-2500 rpm.

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Old 10-18-2008, 10:26 AM   eBay Motors   #5 (permalink)
BigRedChevy
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I see in your sig that you still have the stock muffler. Get rid of that thing.
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Old 10-18-2008, 10:41 AM   eBay Motors   #6 (permalink)
daddysLBZ
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Quote:
Originally Posted by BigRedChevy View Post
I see in your sig that you still have the stock muffler. Get rid of that thing.
I saw that too,why remove the cat,and not the muffler?Get that straight piped and then enjoy!!
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Old 10-18-2008, 10:49 AM   eBay Motors   #7 (permalink)
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4" Turbo back straight pipe, get rid of the muffler and the cat. Then it will be nice and loud and you will get the most hp's.
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Old 10-18-2008, 11:38 AM   eBay Motors   #8 (permalink)
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I 4" straighted piped mine and turned it in front of back tire with 5" tip it screams at WOT
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