Just bought my 08 roadstart on saturday. Shop had put cobra pipes on to dress it up. This thing is backfiring like crazy on deceleration, but guy's in the shop say there isn't anything they can do other than sell me a mapping program for $300. I've heard about removing the AIS but i don't think this is work i should do, nor do i think yamaha will remove something that is on there for emmisions. i've only had it 3 days! Can someone help!