There's nothing wrong with an ethanol mix if you add a little bit of timing advance to take advantage of it. Yes, it will get slightly worse economy, but you can indeed make a bit more power if you're tuned for even a 10% mixture.
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'10 PW 370Z 7AT - wife's car - Project Raspberry Cheesecake
'08 Evo X - built motor+trans | BB-X @ 32 psi | CH3OH | self-built+tuned - ??? WHP
'01 Galant V6 - built motor | GT35R | self-built+tuned - 550+ WHP (retired)
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