My 2007 Low Rider with only `13,000 miles vibrates so much at the rear pegs and sissy bar pad that it is super uncomfortable for my wife to ride with me. I just replaced the motor mounts and both were broken. The vibation is better, but still bad at the back. It has after market exhaust, but stock air cleaner. If I install a free flowing air filter and have the bike remapped, could that solve the problem? It runs well and the spark plug tip looks perfect, but it does not like to be lugged, the throttle is a little twitchy and the fuel mileage is not even as good as my 01 carbureted Road King. I just bought this bike and love it, but if my wife can’t ride with me....
Thank you

 

Might want to try posting in the Dyna section, this is Sportster.