09 SBM G8 GT
So the other day i went and filled up the winter beater at Noco on Grand Island, NY and noticed..the pump said 87 and underneath was a "10% E" sticker, then the same for the 89 nozzle, but underneath the 91 was a No Ethanol sticker. i thought to myself can it be! No ethanol gas!?! well im tuned with a Livernois 93 octane tune, so my ultimate question is, if i were to throw the 91 no ethanol would I reach better performance and MPG's than the 93 with 10%? i guess it would really come down to wether or not the tune is tuned for the ethanol or not? Im curious to try it and read all my data via my Dashboss. Does anyone have any existing expirments with number data to show one from the other?! Thanks in advance!