I have an 11 p71 thats flex fuel tried e85 once. Horrible preformance and power overall not so good of experience. I don't understand why? Anyone running full e85 on there vics? Am I doing it wrong? Or do I need to upgrade things even tho it comes factory flex fuel ? Do I need bigger injectors or? If anyone could help me or tell me what needs to be done or what u did for your setup it would help out alot .