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      07-17-2018, 05:33 PM   #152
perry8912
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Canada
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Drives: bmw x5
Join Date: Aug 2015
Location: Calgary, AB

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Quote:
Originally Posted by ArmyRn33 View Post
Is running 93 with ethanol blend be ok with this tune and much difference between it and regular 91?
It depends on which tune you are running. If you choose 91 octane map, then you don’t really need 93 gas. Personally, I would choose 91 with 0% ethanol over 94 with 10% ethanol any day.
According to bm3, there are only +-10hp difference between 91 and 93 map. So for me, not really worth it.
It’s your car, choose whichever you feel comfortable, it won’t be any issues either one.
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