Quote:
Originally Posted by Bogey
I switched to 87 for and tank and reset the l/100 km and the switched to 91 the next tank without reseting and the mileage immediately with a few minutes of driving went down from 8.7 to 8.5 and i was hauling it in rush hour.
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Performance =/= fuel economy. There have been contradictory reports from members about whether or not they get better fuel economy as well, but the higher octane gas will technically give you a little more power, hence the "improved performance" aspect.