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Old 09-02-2004, 01:38 PM
hotrod hotrod is offline
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Join Date: Oct 2003
Posts: 307
Default Interesting

Just out of curiosity John.
Did you note any trend on the difference in ideal ignition timing between the pump gas, ethanol and methanol configurations?

I tried to chase down a value for the change in combustion speed as you add alcohol to fuel, but the folks over here at the National Renewable Energy Lab could only confirm that several sources note that the addition of alcohol slows the combustion but no one, gave any objective data so you could judge by how much.

My thinking is given that one of the "problems" WRX tuners have is the tremendous amounts of ignition advance the ECU dials in at high rpm, if you slowed the burn without getting detonation it might dramatically improve power output.

Larry
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