Cummins Exaust with Aero 4040xl Before and after

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Uploaded by on Feb 11, 2008

Before and After install of the Aero 4040XL and Cat delete.

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Autos & Vehicles

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Uploader Comments (energinerbuzzy)

  • Is this a 5.9L or 6.7L Cummins?

  • This is a 2007 5.9L

  • Sounds good. What size tip do you have?

  • I think it's 7"

  • Hey how does it rate 1=stock and 10=straight pipe. I have the cat cut out also and want a 4040xl but it cant be too loud.

  • Well since I have never straight piped it, it's hard to answer that. But I would say about an 8. There is no drone in the cab and once your up to highway speeds, it almost is quiet as stock. But put a load on it and driving around town at low RPM's is loud but not too loud.

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All Comments (22)

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  • whats it have for other mods?

  • What have you done to this thing!! What do you got in it to make it a smoke blowing COAL MINE!!

    Nice Exhaust Sounds Good.

  • God that sounds mean as fuck

  • damn u were rollin a good amount of coal with a stock exhaust. sounds real nice

  • ...rough...rough

  • MUCHHH better man, sounding good!!!

  • Nice sounding exhaust!

  • dear god that sounds sexy. I wish I had a Cummins right now..

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