I've never experienced opti failure but those symptoms were very similar to my ICM taking a dump. Bought a new one, spaced it off the head and the problem was solved.
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97 T/A Ram Air Convt
Forever dyno queen / 777rwhp 662 rwtq @ 17lbs / 10.2 @ 140
'24 Corvette Z06
17 Sierra 2500HD Dmax
81 Turbo TA
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