It's been awhile since I've been on here, so thanks to 2000MustangV6 and stacyvt for your input. To begin with, I have taken the car back to the dealer and drove another Mustang to see if it did the same thing...it did. So I guess I'll keep the one I have.
The performance tips you've shared will be seriously looked at. I was told, though, that if I modified the exhaust, outside of the dealer, that my warranty would be voided. So I'm going to look into that more. As for removing the silencer and installing a K&N filter, both are slated for this coming weekend.
Thanks again for the input, and keep it coming. All I can say is, Praise God and long live Mustangs!!!!!