Mentioned this here before, this is/was all tune related. Cars running power adders haven't seen the same problems as they are running a custom tune generally. Long and short of it is there were several vendors releasing way lean tunes because they couldn't calculate lambda correctly resulting in 13+ A/F ratios creating detonation/failure. 12.5 is optimal on a N/A car.
This is not a Ford issue. They released the TSB in response to the poor canned tunes customer's were unknowingly using. No different than GM or Chrysler's stance.
Bottom line, use a reputable tuner, dyno the car and check A/F ratios.
