E85 will be noticiable.
I am running a tune in OFT (an pre-own device could be in $350/400), tune from wayne roms (wayneroms.com), at that time cost me 50$ (maybe today is more that that)
OEM fuel pump.
OEM Header gutted.
E85 only for track days since I do not have the flex tune (another ~400/500 in hardware). I do not like to have E85 filled the whole year. I do not mind for short period of times (3 o 4 weeks)
Hope it helps.
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