[endoracing]

I just purchased my gryphon (and its great!) and had a question:

I have read that cars need fuel system modifications in order to run E85 but I have also read that all cars in the last 20 or so years already have E85 compatible fuel systems and only the engine tuning needs to be modified.

Is there any truth to the latter and if so would a custom E85 tune from PHP be enough to allow a non-flexfuel f150 to run E85 safely?

Just curious in case gas prices get out of hand and E85 somehow remains low.

Thanks,
Jeff