I havn't heard enough good things about octane booster to make me want to use it. 93 octane should be used becuase this is a high-performance machine. Its like running 87 in a Ferrari, its just not right. The Raptor might be fine with 87 cuz its liquid cooled and i think it has a compression lower than 10. But the Z is 11.3:1 so 93 is good insurance. AS for running 93/race gas, ur wasting ur money, a cooler running motor puts out more horsepower but in a stock engine its a waste and its harder to start.
Later