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SVTPerformance's Chain of Restaurants
The Distillery
Understanding E85 A/F ratio to Gasoline?
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<blockquote data-quote="08 Z06 Dude" data-source="post: 14038972" data-attributes="member: 78632"><p>Is your air/fuel meter a wideband? If so, what kind is it?</p><p></p><p>It is best to stop thinking about the mixture in terms of a ratio, and more in terms of lambda. If your meter has a reading for lambda start using and getting accustomed to it. The gauge only takes a specific output voltage from the wideband and turns it into a gauge reading.</p><p></p><p>Stoich for E85 is about 9.76:1, and gas is 14.65:1. </p><p></p><p>Stoich for E85 or gasoline will generate the same output voltage from the wideband to the gauge (lambda).</p><p></p><p>Therefore, if you are accustomed to reading gas AFRs, you can just pretend the car is still on gasoline and use the readings for your adjustments. Most of my gas buddies that converted to E85 have done just that.</p><p></p><p>**EDIT*** Doh! 03Steve said it in fewer words while I was typing...</p></blockquote><p></p>
[QUOTE="08 Z06 Dude, post: 14038972, member: 78632"] Is your air/fuel meter a wideband? If so, what kind is it? It is best to stop thinking about the mixture in terms of a ratio, and more in terms of lambda. If your meter has a reading for lambda start using and getting accustomed to it. The gauge only takes a specific output voltage from the wideband and turns it into a gauge reading. Stoich for E85 is about 9.76:1, and gas is 14.65:1. Stoich for E85 or gasoline will generate the same output voltage from the wideband to the gauge (lambda). Therefore, if you are accustomed to reading gas AFRs, you can just pretend the car is still on gasoline and use the readings for your adjustments. Most of my gas buddies that converted to E85 have done just that. **EDIT*** Doh! 03Steve said it in fewer words while I was typing... [/QUOTE]
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SVTPerformance's Chain of Restaurants
The Distillery
Understanding E85 A/F ratio to Gasoline?
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