I live in PA and was wondering if it is legal to have just a straight pipe on a diesel pickup truck for an exhaust. I know that the exhaust must exit either the back of the truck or the side and the new Emission Laws don't include diesel trucks, but do I still need a muffler?

Thanks,
Ryan

 

it wil be about as loud as a gas truck with cats and no muffler

 

Yea man - perfectly legal here in PA!! Go for it!! I've got mine straight-piped.

 

I'm going to do it as soon as I get my new Tymar. That should make a big improvement.

Thanks for the info Guys