My SVT has a similar problem but I haven't done anything to the secondaries or the TH Fix. It is more like 1500 to 1250 on mine. It also ends up dropping to 750 only at a complete stop. Doesn't seem to be a real problem though. I have been driving it like this since I got it a few motnhs ago. 2000rpm seems really high though. I thought I read some where that some one had to replace some idle sensor or soemthing to that effect. It doesn't bother me enough to do something about it at this point. Hope someone esle has some good ideas about hte problem.
Green 2000 SVT #1166
mods-K&N open air filter & Custom heat shield, Custom y pipe and 30 in resonator,DMD, arm rest heightened
http://www.geocities.com/savinoss/Cars.html other cars-89 sable 197000 miles and still going-Wifes car 99 Mystique V6 5 spd