ignition timing with new zpi pistons
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ignition timing with new zpi pistons
im looking to buy the zpi 11:1 pistons and stage one head. im going to install my self but was wondering if i would need to retard the ignition timing to prevent knocking. i am aware that higher octane will reduce knocking but im not shure if 92 will be enough. looking for any comments. knowledgable people only please
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