since your getting really rich at part throttle, and your tps is set ok, i would check the mass air. i have had many go bad in the past and they acted the same way yours is. it moves out better at part throttle, then when you move the throttle past a certain point it falls on its face. im telling you just try it, switch it with someone elses thatyou know works. youll thank me (i hope) lol
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