I'll start my car up and it will be running OK. Then if I drive it for a little bit, turn it off, and then start it again, it runs like crap. It will stall, to keep it on, I have to keep hitting the throttle until the computer stops acting stupid. After about 5 mins, it's normally OK. Before though, the throttle response is terrible. Also, my TPS was at 1.13V with the car off.