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I hope to stay with at least 91 from now on, it runs well with it.

Driving it on 87 octane, my car feels like a worn out dog drastically panting for water lol!
 

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I’ve never tried 93, bc it’s generally $0.70 more per gallon, but I found it reasonably priced at Sam’s. I’m on a tank and a half of it, and I have to admit that it feels smoother, and more ready to run when I push it. I’m not going to see an MPG bump, because I keep putting my foot into it.
 

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Has anyone gotten a tune for 93? or can you just add 93 without a tune?
You don't need a tune. However if you do get a tune eventually it will make even more difference.
 

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I use 91 and have no regrets. Performance is added, and mileage gains are positive. I make a one hour trip (one way) to get groceries, and set cruise control to test both 91, and methanol blends. I added about 80 or so miles running 91, so extra cost is totally worth the performance and mileage gains.
 

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I run 93. I run a few ounces of Marvel Mystery Oil through the gas tank after every 20-25 fill-ups.


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