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Re: Fuel Condition and Quality
Typically, just using a higher octane rating in a turbo car isn't going to make much difference until you tune for it, although it will resist detonation a bit more. That's all octane rating is anyway, resistance to pre-ignition knock. I wouldn't suggest running additives of any kind in a high revving turbo application either. I've got a turbo car that revs out at 8500 and NEVER put any additives in it. Pure gas every time, and nothing else.
On another note, is it really that hard to find non-ethanol gas where you are? In OK you can get it almost anywhere. Most stations have clearly marked, separate pumps for 100% gas and E-10. Maybe we're just spoiled.
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