well when i first purchased the car,it had very similiar issues,i found the eha to be disconnected,so someone aslo did it for some reason,i purchased a used one that i was told was fine,installed it,then plugged it in,it ran horrible,loss of power would rev but not shift,unless i lifted throttle up,gained more power as i lifted throttle,i had a proffesional adjust the air fuel,mix.also there was a very strong smell of gas,when i plugged the old eha in,this smell dissapeared when i replaced it,so its like im back where i was with the original eha,im leaving it disconnected for now,till i can have my mechanic diag it.it has hard cold start now,but i can live with that,considering its running much more stronger disconnected.