i was going by the 90-92 year one.... that says its a faulty ecm or knock sensor or loose connection/bad ground.....
i dont understand any of that diagram whatsoever.. how long did this take you to do?
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1990 IROC-z28 Convertible ... best et (15.9 @ 86.7)
1970 Chevelle ls5 ... best et (13.97 @ 101.3)
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