A couple Gryphon questions, what tunes and octane?

[88Racing]

From my personal experience with mpg and octane and price here where I live its a wash.
87oct is straight.
89oct is e10.
91-92 is 75% e10, so only 25% of gas stations have the straight gas. Only the larger towns will carry the 91-92 at their pumps.
The price difference between 87 and 91 is $.30-$.50 right now.
Alls I was offering was some personal reflection on why I ordered what I did. That's why I asked you what I did about the 91 tune.
You'd be suprised if you put a pencil to your figures and carve out some real hard numbers.
Some places you do get better results with mpg's and octane than others and it depends how you drive also.
JMHO