Why did you take it to a Ford dealership? what probs? also, have you got an induction kit fitted or standard?
If you need to know, take it for a 'Rolling Road' for about £50 max, and see what BHP it is running at.
If it's more than 165bhp, they should be able to tell you if it's been re-mapped.
A £50 test is better than £200 waisted IMO, and you'll know more about your

at the end of the day.
