better as in which is better for performance or better for the smog guy not to complain about
turndown after the muffler is just less to break off while romping or jumping the truck but the smog guy might complain that he has to go under the truck to get to the exit and get his ben davis work shirt dirty
exhaust is to complex to tell which is better for performance. exhaust pipe length, diameter, and other variables
exhaust backpressure is another thing that is easier to know the consequences of changes. less length or larger diameter pipe will make less backpressure and will get you better top end but less bottom end so more mph but less torque. and vice versa a small pipe or more length will give good bottom end but less top end. that is why other motorsports have tunable mufflers.
just play with it to see what is good and get a good balance it is known as exhaust tuning
how ironic is it that most people slow down for speed bumps yet almost all of us here im sure pin it
as for stirring up dust my brother runs turndown and he has no asphalt or concrete on his property so its in the dirt all the time and i see no dust being bothered as long as he doesnt have a bagged toyota on the ground<P ID="edit"><FONT SIZE=-1>Edited by vwguy on 10/14/01 10:01 PM (server time).</FONT></P>