93Octane fuel with 89Octane tune

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StoneDude76

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I have been running the 93 octane Hemifever tune. I still have about a half tank of 93 and I am curious to how my truck likes the 89 tune. So can I run a Hemifever 89 tune with 93 fuel in my tank?

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RJP

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Should not be an issue as its okay to run more octane just don't run lower octane than what the tune needs.


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StoneDude76

StoneDude76

Senior Member
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Dec 17, 2014
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Location
West Chester,PA
Ram Year
2014
Engine
5.7 HEMI
I thought so just making sure. Thanks guys.

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