I just bought a 09 FXDC and was going to have the dealer put screamin eagle slip ons on the bike. They recommended the V&H slips on with an air kit and said the bike had to be remapped. All of this at a cost of $1200 bucks. They said if I put the screamin eagles on and did not do the air it still needed to be remapped or the bike would not run right. All of this at a cost of $1200 bucks. I have had some buddys tell me that if you just change the mufflers with slip ons and do not mess with the air cleaner that no remapping should have to be done. So just wondering what the case is? Dealer ripping me off or clueless buddies? I would appreciate any help. Thanks.