I filled half the tank with Boost 98 from United petrol, on the way home, the car didnt feel too flash, it was very humid in Melbourne yesterday could have been part of the contribution. When i got home last nite i reset the ecu, and went for a spin. Drove the car pretty hard, it felt alot better but it was cooler and less humid also. This morning, quite humid again, but the car hammered hard. I think i will use this fuel from now on, it's quite cheap and feels powerful. I will top up the tank and see what fuel efficiency it produces.