Thanks all for responding so quickly. Very cool. To all realize please that I am no motorcycle mechanic.
Gage.....thanks brother, I may take you up on it and no, I replaced the Supertrapp with stock.
Airhead, howdy. Hope all is well south of the border. The bike actually does run pretty well but for the backfire with any throttle let-up. I do come off the bike smelling of exhaust though. Not as bad as with the Supercrapp. My mileage is around 30mpg. I don't have too unrealistic dreams but 35-40 seems realistic doesn't it?
Thanks Mista and Caponerd for the leads.