if i were you i would look into the tps being out of adjustment cause i would always try the jumper wire and it woulnt lower rpm's , then i releized that my tps was way out of wack and i fixed that then did the timing again and it made my motor run like brand new. If you want to no how i adjusted it email me at jeffrey.bononcini@cvw14.navy.mil, peace, its because im on a aircraft carrier and i dont get internet that often to get to the site so please if you need help just email me. peace jeff