Dealer is going to replace mufflers on my new '09 Ultra 110 due to discoloration. They are going to do a dyno and remap the engine. I am not sure I know exacty why they are going to do this except they said the engine was running too lean. What should I be expecting and asking at the dealership? A buddy said I should ask for a read out after the dyno? What will this show me? As you can see I am new and on a long learning curve. Any help would be appreciated. Thanks in advance.