Interesting study using mid range ethanol blends on stock F150 with 3.5 ecoboost. E30 average increase of 41 hp and 52 ft lbs of torque. Study also claims no change in MPG between E10 and E30.
http://www.sdfu.org/assets/docs/uplo...19-17final.pdf
If I had a ecoboost I'd be splash blending it.