I am in my 70's and a lot of my hearing is gone and the reason I have been told is loud noises. :frown: When I was younger I liked the sound of loud pipes but I am paying for it now. If you want straight pipes use ear protection. You also should use it when you use most lawn equipment straight pipes or not.
For years my hobby was shooting guns.
I need a straight pipe so I can tell if it is running. :biggrin:
You need a megaphone exhaust on a diesel for sure. Is it a two cylinder diesel? one for each ear. Could be when you are working it real hard you can get some black smoke along with the noise that way when your hearing is completely gone you will know it is still running.