My cure for the Angry Blow Dryer sound.

[Jonnydime]

First off there was a sale at my local Mack dealer so the 5" muffler's were on sale for $40. I got tired of the blow dryer sound and had one of these mufflers sitting next to my DPF in the shop so I though what the hell they are around the same size. It just about eliminated the blow dryer sound but still lets everything else through. I have been running it for about 3 months and have not had a problem. Before anyone ask that has not seen the inside of a semi muffler I would have to say there is zero restriction. If 12 liters of Mack engine can breath through it my 6.4 should be good.

[drunk on diesel]

so many different 5" mufflers. to say they have no restriction is a bit of a misnomer. I'm sure you're not hurting performance, but the standard shelf mufflers with the soft plug/diffuser in the middle don't flow near as well as something you can see straight through

a simple packed muffler will eat up the turbine sound