I never assume a new updateable device is up to date. It may have sat in a warehouse or on a shelf for months. Check for updates before using it.
As for the different tunes, try them all. Just make sure you use up all the 87 in your tank and refill with whatever octane is recommended for the "extreme" tune before installing that tune.



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BTW, I just drove up and down my block and it did feel different. I have a full tank of 87 so I am curious to see my mileage down the road.

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