Any dyno numbers for the GT at 87 octane vs 91 octane?

[clevernickname]

Hope this is the right subforum, the 5.0 mods is only for mod/tune talk i assume.

so yeah, there's already another buried thread of people arguing if the 91 octane is worth it, and calling anyone who puts 87 octane cheap when it's only a certain amount of money extra. please lets not make this into that discussion.

would just like to see if there are any numbers of 87 octane vs 91 octane. that may help me decide for myself lol

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[benanderson89]

I'd actually like to know that myself, but with the EB.

We don't get 87 in the UK (lowest is 95RON/91AKI) - so knowing the discrepancies between the fuels would be welcome.

 

[Reds197]

On a non boosted car 87 compared to 91 will be very minimal unless its a very hot day or you are driving the car hard. The computer will pull a couple degrees of timing to compensate for the octane difference.

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