I recently did the gas pedal spacer to make heel and toeing easier. I wish for the price I had done it sooner. Consider that too. I don't understand the question about the OEM reflash. If you have the Cobb Accessport, it will to a reset to original. The same is not true of the Mountune MP215, as only a dealer can do a reset of that. There is a reflash for the FOCUS for more power ala the Cobb/Mountune but not yet for the Fiesta.