Hi folks, looking for some advice on what to look at for diagnosis.

I have a 2013 E-TEC HO 200hp that went from running 5900 WOT to now 5100 WOT. The engine seems to be running fine other then the fact it will not go past 5100 rpm. I have had it at a dealer (hooked up to computer) with no real answers. There is no major error code given.


Thank you!