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IMO, higher octane gasoline will improve performance because the Tundra's computer will advance the ignition timing with it. The reason these trucks won't experience pinging with 87-octane is because of the knock sensor/computer. Not saying that 87 will create ping but just because you get none on 87 doesn't mean performance will not increase with higher octane gasoline. Also STP fuel treatment in a tank of 87 octane gasoline does not equal 91/93 octane fuel. Premium gas will also increase fuel economy, whether it be the fact that it burns slower or not, it does work.
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