Wed Jan 11, 2012 2:40 am by woody
I ran both drag pipes and upswept fishtails with S-pipe and mufflers on a UL chopper about 25 years ago, and I didn't notice any difference in performance. I did a lot of riding on hilly, curvy roads, so the bike got a real workout all through the RPM range and gears. I preferred the drags, however, because of the cool blue flames out of them at night.