Grass burner vs upright stacks

i have a FL70 truck with upright stacks. I will say this, when she smokes pulling heavy stuff i like the idea of not spraying the car next to me with diesel exaust haha. I once drove a Low pro international with an underneath exaust,......................every time i took off at a light it would bellow black smoke on the car next to me or on people at the sidewalk. Actually one by stander started yelling profanity at the truck lol. If its a truck i prefer upright because of that and because personally feel it lets the carbon monoxide escape better rather than rising back into the truck. Just my $.03

 

A straight pipe and properly curved 90° won't add much back pressure with 5 or 6 inch dia. and less than 600 hp, the muffler and emissions equipment will be the killers and will be pretty much consistent between the weedburner or upright.

 

Same, the stack is cleaner. Smoke emitting from the stack looks better than a cloud being emitted from the ground. No oil or soot to cover everything under your truck, or burn anything.

 

You'll want to leave the flexpipe in. If the stock system has a single muffler, a single stack shouldn't cause much more backpressure, if it has dual mufflers you'll be better off sticking with the duals for less backpressure. IMO.

 

The flexpipe is to absorb vibration, heat expansion,etc.

 

Just put a set of 8" straights and be done with it. And maybe a hollow muffler under the cab to make DOT happy.