Was riding with the group last weekend in a dusty area (Owyhee mountains in Idaho) and the rider behind me made a comment that my exhaust was kicking up a lot of dust especially when stopped. He recommended a fix that others have done to units that have the exhaust pointing down.
Went to Lowes and purchased a 45degree 1 1/2 inch copper fitting (1 1/4 too small) and attached it to the exhaust pipe. Fitting a little to large so filled in the space at the top with exhaust patch. Now exhaust points out not down. No more kicking up dust, at least with exhaust.