Have a 2005 EFI Road King standard with Stage 1 kit, screaming eagle slip-ons, race tuner and dyno work. It's the noisiest engine I've ever heard. The dealership says it's a little noisy but there's nothing that can be done about it. I've not had a twin cam before but other Road King's I've ridden have no engine noise and a rich exhaust sound is all you hear when riding them. Any ideas?