Ok fellow Vulcan riders, I have a 2009 900 Classic, I put a set of Vance & Hanes pipes along with a FuelPak, since I place them on the bike I have gotten really bad gas mileage. I used the recommendedd mapping sequence and have callled c. service but getting less than 40 mpg. So can anyone tell me if this is normal. I don't want to go back to stock pipes and debaffle them. The bike sound great but really 10 mpg less? Any suggestions?