Man1 Aint that the thruth about the pipes! I have the same problem with my XR610R supermoto, it has a Pro Circuit 496 forest approved slip on on it and I get dirty looks from people. But a hardly ableson rider goes by un noticed with 4 in dia streight 180db drag pipes....and 130 cubic inches of annoying loudness.
don't even get me started about the straight pipes on the full sized chevy trucks around here - no cats left in the system, straight out the back. Not surprisingly, you see a lot of Harley logos on the rear windows of those trucks, too
There's no emission checking here once the vehicle is off the dealer's lot, so these custom pipes on trucks are pretty rampant. Some muffler shops are almost advertising that they do that (illegal) stuff