06-07 LBZ Performance Discussion of Chevy and GMC Trucks with LBZ Duramax Turbo Diesel Engines Related To Performance And Longevity

exhaust question for you guys

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  #11  
Old 03-11-2009, 08:06 PM
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cool thanks for the help guys
 
  #12  
Old 03-12-2009, 06:34 PM
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Even a straight exhaust is not really loud. I have a pipe in my muffler on my duals and is quiet to me. I lost my cat!
 
  #13  
Old 04-22-2009, 04:24 PM
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well got 4" cat back, and im gunna probably buy the down pipe as well. screw the emissions. Im gunna go no cat/muffler. hows the drone in the cab?? just wonderin
 
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Old 04-23-2009, 07:13 AM
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The drone with 4" will barely be noticable, especially with the muffler on.

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  #15  
Old 04-23-2009, 05:58 PM
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oh ok thanks tyler. and im cat back with no muffler right now. is it louder with or without the muffler?? i always thought without but some of my buddys say it might be a tad louder with the muffler on.
 
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