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Originally Posted by phunk
I think e85 has contributed for me... But I don't think I am taking full advantage of it either. I feel like its more picking up the slack for me by being more forgiving and allowing more negligence, than it is giving me a major advantage.
I think my car could spool up better and make a tad bit more torque if I knew more about tuning with e85, tuning with Osiris, or both.
Since I am running the fuel system to the edge, which tends to cause cylinder bias, e85's resistance to knock will aid me in surviving through that. But then again it's e85s fault that I'm at the end of the fuel system.
I fuel starve my car ALL the time from hard right hand turns. No, I don't have the CJM road race pump in my car lol. The first batch sold out. E85s resistance to knock has probably helped keep my engine intact through that. Ill come into full boost on an on-ramp and suddenly go lean and starve... I don't feel like a 91 octane setup would survive that after a few times.
Premium gas and water injection should be able to make just as much power almost as effectively? I think that for over 550rwhp on pump gas I would want water injection.
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Quote:
Originally Posted by phunk
Out here, the E85 pumps are always being used. The stations that have the E85 pumps, usually have 1 or 2. I would estimate that 1/3 of the time I have to wait for someone who is filling up a flex fuel vehicle.
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Water / Methanol injection helps cool the cylinder temperatures when you're running leaner air fuels, adding more timing, or boost. It will also increase the octane rating of the gas. When I went direct port with a 50/50 mix, I saw about a complete point lower on the air fuel ratios compared to without. It went from 11.8 - 12.0:1 air fuel down to about 11.0 - 11.3:1 when spraying.
You're probably right about the motor holding up due to the E85, it really does allow for more timing / boost compared to 10% Ethanol 91 or 93. It's unlikely you would have gotten so many miles out of your motor if you ran that on regular 91 by itself.
The way gas has been lately (especially on the east coast here), 91-93 octane has been horrible and unreliable. If I had E85 available here easily, I would be tuned on it for sure.
Question, what wheel and tire setup are you running?