yes good point. I had a simular problem in one of my other cars. It seemed overnight that the car had lost about 1/3 of its acceleration. I took me about a day to find the problem. The drivers side floormat had worked its way up between the gas pedal and its stop not alowing the throttle plate to fully open. It was an easy fix

but as you said it made a big difference in performance. I will check to see if it is opening all the way. I thought all F@%&'s were built that way ya know Fix Or Repair Daily
Thanks.