how does a duramax sound with a straight pipe? what is the best exhaust to have on my Duramax? ive had it 3 weeks, so far i love it. its a 2005 2500hd has only 56000 miles..

 

sound like a cougar
and sometimes like a hoover vac

 

i got a 4'' single pipe going back no cat no muffler afe stainless with 3'' diamond eye up pipe. and i love the throaty sound i get just from stock. think cougar says it best. but when u are at tourque lock doing a buck nothing sounds better.

 

the one thing I love is that there is no drone at highway speeds with a straight pipe, Mines straight piped and I love it
this is a video of my truck from the inside punching the throttle

Here's another of it just starting and revving a little

 

yup

 

they sound good coming from a cummins guy

 

I love the sound of a straight piped duramax