I have mine scheduled for this Friday. I have experienced limp mode at WOT with some of my tunes, due to a drop in FRP. I don't know if this will help with that, but it probably can't hurt.
I had to talk the dealer into scheduling the appointment. He said the recall indicated that sufficient quantities of the new part weren't yet available. Then I pointed out that they had 11 in stock, so he went ahead and scheduled it.