sLOW OUT OF THE HOLE, WHAT TO DO.

[74NOVA]

I have an 88 maf stang with an aod and flowmasters and nitto drag radials and no other performance mods. When I first to it to the track with rotted mufflers I went 9.9 in the 1/8 with a 2.2 60ft. I went to the track last night ran a 10.2 and 2.3 60ft then it kept getting slower and slower out of the hole by the 4th run I ran a 11.1 and 2.44 60ft. It didn't matter how long the burnout was either. What could be happening.? When it hits 3000 rpm its fine, and on the street it doesn't feel this sluggish.