Possible Fueling/sensor Issue?

Hi all

I have a 2012 1200 FC, bought new in September.  The bike has just over 4,000 miles and is mostly stock with the exception of a Delkevic slip-on exhaust.  Over the last couple of months, I've noticed that the engine doesn't seem to want to rev as freely as when I bought the bike.  It doesn't ever cut out completely, but does feel like there's something pulling the revs down.   I don't know if the fuel/air mixture is running rich, or if there's a problem with one or more sensors.  Suggestions...thoughts...comments?

Welcome  and  check  the  air  filter  first. And  then  Seafoam  the  fuel .

Sounds like you've still got a warranty - I'd let the dealer have a look at it.  If nothing else it gets it on record in the event it worsens later after your warranty expires. 

Warranty   does  not  cover  general  maintenance.