its not wiring. if it was the car wouldnt run at all. its something to do with the pcm not picking up the crank signal from the opti(crank trigger) a bad crank and cam sensor acts the same way. but it will run. i say sence it still runs the same after your "rebuild" its Not the opti. and its ECM related. get a junkyard one and flash it with your tune file.
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1998 Firebird:buncha parts thats used to make it go fast..... not so much anymore. 
BAAAAAA!!!!!!
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