From your original post it sounded like you were running e85 without a tune. Run it and enjoy the benefits if it’s tuned properly!Clarification:
most ( i don’t write all because I’m not familiar with all of the OEM equipment) fuel system parts (intake injection) are compatible with E85 variants (I’ll share more about the variants)
when referring to E85 it is very important to understand if you are talking about pure E85 that purchased in barrels and have a constant percentage of ethanol or pump E85 that varies in its percentage. The first can be run with a tune, the second needs a more flexible tune that will change in accordance to the ethanol‘s percentage; those are known as flex fuel, and they also enable you to run regular pump gas.
Flex fuel system parts are based an around a sensor that is placed as close as possible to the fuel injection rail. Then an oem ecu will have the flex tune incorporated in the main ecu, or you can have a dedicated ecu for that and some sort of manipulation the the injector pulse width.