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1993
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Firebird Formula, Standard
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Repair and Diagnosis (Single Page)
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Engine Controls - Theory & Operation
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Ignition System
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Ignition Timing Systems
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Notes
Ignition Timing Systems: Notes
NOTE:
Unlike other type ignition systems, 5.7L VIN P with Opti-Spark do not use a by-pass circuit. Ignition timing on this system is constantly in EST mode.