In addition to all my previous, unsolved problems ( see https://mustangforums.com/forum/tune...fter-tune.html ) I know noticed something else wrong. Whenever I go to slow down and push in thie clutch, my car's RPMs dip down to where the motor chokes. It quickly pops back up to normal, and never actually dies, but chokes.

Any suggestions, besides just throwing my SCT tuner out the window (which at this point is a possibility)..