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First, your engine is rated to run 91 octane. Higher octane is highly unlikely to help so you can save some money by stopping the octane booster. Second, the Cruze is a torque managed engine. The ECU commands the turbo boost to meet the torque requirements needed to respond to the throttle. The stock settings are good to well over 10,000 ft above sea level.
If you want more power from your engine consider a performance tune.
If you want more power from your engine consider a performance tune.