my cars been sitting at my uncles for 2 years and now for the past 2 months i got it back on the road, the opti was first bad and then i changed that... then the o2 sensors were gone and thats what it said on the scan tool, and the ses still is on and it feels like it should have more power, cause even this stock 96 slp ws6 has wayyy more power than mine, and i have more mods than his comes with, and idk what to do cause im goin to the drag strip this fri...does anyone have any clue that could cause this and have a ses light
thanks

 

You'll have to get the code pulled to get pointed in the right direction. It may be an entirely new problem.