I consider to change fuel from petrol to E85 on my Firebird -68 with LQ9 engine(LS1 intake).
What should I pay attention to when I change to E85?
First of all are there any parts in the fuel system that are not compatible with E85 such as fuel hose, injectors, etc?
What should I change in the tune file except for AF Ratio.
I have used the excelent Calc.VE tune guide for tuning my engine for petrol, can I use this for E85?

M