Hello all. I bought my friends 99 RSV about a year ago and have been having a blast riding since then. I have done numerous maintenance tasks (oil change, clutch fluid, carb sync, etc) on it since I have owned it. During the year I have noticed my gas mileage was right around 28-30 mpg which I thought was normal. During the meet and eat here in Daytona last weekend, and research on this forum, I found out this is not very normal. What are some things I can look at to improve this. The bike seems to run fine. Every now and then I get a back fire on deceleration (But very rare). One thing I know is that my friend put on a Road King muffler when he owned it and he thinks he rejetted it with a stage 3 kit???