Good day fellow sledders,
I just picked up a 2010 Vector LTX GT at 4k miles and I see that it runs best on 87 octane. Given ethanol is generally not the best for our engines and 91 reduces performance, has anyone modified their fuel map/timing to be optimized for 91 ethanol free? I can find this fuel at just about all stations I visit as I am on the border of Wisconsin and the UP so it may make sense to make this change. I am surprised I was unable to find any posts on this. Maybe I just suck. Thoughts?