locks you out of 2nd and 3rd gear unless you have the go pedal pushed hard.
so from a stop if you go to shift out of 1st into second and your not hard on the gas the tranny will lock you out of 2nd and 3rd, forcing you to shift into
4th
I asked this question earlier 2011 Stang Man trans post!From the replys here & reading elsewhere it can be tuned out with a tuner or possibly removed by replacing the shifter.I'm no expert on this by far but i'm hoping what i'm reading is correct!Hope this helps!