Can you mix E85 with Gasoline?  For the octane benifits... I know that ehtanol can eat up most stanrdard hoses and lines over time, as well as requires a hotter burn to ignite, also requires MORE to release the same energy. I do know that ethanol has a density of .4x and gasoline . 6x...  
So here are my questions:   
1.  Is E85 the same density as gasoline? 
2.  Can they be mixed with no adversed effects 
3.  If theres a say 80/20 mix of Gasoline to E85, will that be enough to eat through hoses 
4.  Assuming the same mix, will power output actully fall @ Xpsi of boost, but still allow for higher boost allowing more power in the end 
5.  If they are mixed w/o modifing the ECU, will a lean state ensue