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      10-08-2012, 10:41 AM   #9
sales@ESSTuning
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Drives: ESS M3 / M4
Join Date: May 2007
Location: AZ

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The ECU will adjust to take advantage of higher octane fuel up to 100 AKI unleaded and will provide added safety. Best result I have found for the dollar is a mix of about 4-5 gal of 100 with 91 or 93. This will get you max performance without overspending. The car is very happy with anything over 94 AKI.
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