I bought my truck and it has a 4” or 5” exhaust system with a muffler on it. I hate to say it but it is too loud. Driving on long trips the noise gets to be a little much in the cab. There is a drone at 2000rpms. Are the better brands of mufflers I can install. I don’t know what I have now and don’t know where to look to find a name. I am only at 350hp and don’t plan on adding any more. Thanks

 

don't replace it, just add another...probably cost less than replacement. that's what i did

 

magnaflow muffler I think it is quiter than stock

 

Here you go!
I ordered one, just havent installed it yet. Price is CHEAP also.

http://www.cumminsforum.com/forum/ft...available.html

 

I installed the muffler from the guys above and all I can say is WOW. Anyone wanting to tune it down should get one!! Cut the noise in half and no drone for under $100