The AFR(gas scale) was tested upp and down. I dont have any numbers here but i think it made the best @12.somthing on my motor and 34spark adv.
Some guys over here runing turbo motors now konverting from e-85 to race gas. They say that e-85 make more power than pump gas and that race gas make more power tan e-85.
Dodge Dart-67
Dodge Custom Royal Lancer-55
Dodge Dakota 4.7 -05