If he's launching at 1800, I doubt it's his TPS. You can check it by back probing the gray/white (w/ the positive test lead) and gray/red (w/ the negative test lead) wires at the TPS with a DMM set to 30vdc. Turn the key on. DMM should read no higher than .95vdc at idle. Slowly rotate the throttle while watching the meter. It should increase smoothly, maxing out at below 4.8vdc at WOT.
Anyway, Has this problem always been there, or did it recently start? If it just started, what changes did he make around the time this started. If it's always been a problem, what gears does he have?
Take care
~Chris
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