I believe the word was they were worried about the warranty claims they expected from Cobra owners. It's the reason they detuned the heck out of the Cobra computers with the worst fuel/air and timing curves.
Open loop delay is one of the things an EEC tuner or similar device can adjust.
http://www.allfordmustangs.com/techa...CTuner_FAQ.pdf
The top of page 13 lists this command, though it's indicating high load is 1/3+ throttle.
Of course, the fact it can adjust it doesn't necessarily mean that it's preset at 3 or 7 seconds, etc.