Originally Posted by Roman@ESS
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.
Thanks for the input. I thought I should not go above 95 AKI due to the tuning. Thanks for clearing that up.