Yep, I know all about that scenario... since all I have is a suitcase under my hood still. I just try and ask other riders about their "can" experiences when I get the chance. Ideally I'd like to ride with another 800R XP like mine but with an after market can before I drop $300 bones on a can that may end losing me HP just for a weight loss... I've also eaten less cheese burgers this year and have lost 15 lbs... that may help.
Hey Paul, I have ridden with a guy out west that has the 800R XP and he has one of those carbon fiber cans, they weigh something like 2.3 pounds. He didn't notice any loss of power or say anything about his can at all so it was just fine for him. It seemed to me like he could climb anything so I couldn't notice a difference. It sounded sweet as heck when he was at full throttle.. wasn't too loud but had a sweet roar. If I had one of those engines I would do it for the weight savings alone... remember I'm just a little guy.