I noticed that if I turn the tps counter-clockwise as far as possible the least it will read is 0.980. The guy I bought it off of said it ran the best at 1.1 in his car. Should I bump it up to 1.1? Another thing, does the tps make the car run richer, and if so where should it be set to pass emissions? So to sum it all up, I would like to know where it should be for best performance as well as for when I take it in for the emissions test.