Originally Posted by DRconvertible
I think one of the reasons people report poor mileage is the popularity of aftermarket slip-ons and fuel tuners and air intake kits. An overly-rich map in a PC5 and loud pipes and aggressive riding to hear the pipes all result in lousy mileage. The stock pipes are quiet but have a really nice low, mellow tone and other than a little flat spot down around 2300 rpm the stock fueling is pretty good as it is. It really likes to run about 3000 rpm.
There you go. This. Overly rich, smells like a Briggs & Stratton with the choke on. And, don't forget, the guys that ride like they are in a parade,
THEY are the ones getting 55-60 MPG