After my 05 vstar sat for a few months it decided it was not going to run. I took it to my local yamaha dealer for service. I had the battery changed, fluids drained, plugs changed, and carbs cleaned. The mechanic states he now has the bike running great execpt that it backfires on deceleration. It has never done this before. It has hard chrome shot gun pipes and was jetted when the pipes were put on back in 05. I have never had a problem with it backfiring until now. It has been in the shop for 9 weeks and the mechanics are stumped. They cannot find any air leaks and have replaced a bad seal. Can anyone suggest anything we are missing?