Well.
I have not hacked the muffler off of my diesel.
I was told that there are no benefits to be had unless engine mods were made.
The truck hes no cat..never had, and most certainly never will either.
Your opinions?

 

Good question, was wondering myself.

 

There is a benefit for the stock truck...................

IT"S LOUDER

 

mileage should go up slightly after you get done romping on it