Originally Posted by
tie fitr
Why can't you "chip" a 4V? The 05 up are the ones you can't chip, because they got rid of the port on the computer where the chips used to plug into. That's why they have to be flashed now.
By all means, feel free to show my this "chip" that just plugs right into the ECU. Mustangs from '96 (I believe it's '96 or '99) are required to be reprogrammed via a SCT or Diablo handheld tuner.