With everything standard you'll be able to a 10PSI pulley on 98 octane fuel. This would represent the best value for money. Otherwise you can run a 8PSI pulley on 95 octane fuel.
"I am running full factory computers and sensors what are all standard. With your HOLDEN L67 V6 Boost Pulley Upgrade Kit, which pulley gives best return on power but still factory control"
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