Yeah, I dig that rocket ship at start up. It's actually kind of nice having the car tell me when it's OK to take off.
I do notice hesitation when the engine is cold, I have to take a u-turn when I go to lunch from work and the car doesn't want to move for a little while unless i gun it which I don't want to do since the engine isn't warmed up. I now make sure nobody is coming anywhere near me from the other direction when I make my u-turn.
Tach normally at 750.
If I drive on the freeway or drive ober 55 on the street, when I come to a stop at a red light the tach drops to a little above 500, sometimes it seems like it will stall but doesn't.
I've never had a car that varies at all. The Cobalt was at 800 every single time.