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SVTPerformance's Chain of Restaurants
The Distillery
if i tune on real e85 will ecu adjust for e70?
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<blockquote data-quote="Shaun@AED" data-source="post: 12875884" data-attributes="member: 32381"><p>It's easier to think in Lambda rather than Air Fuel. Air fuel is stoich multipled by Lambda, but it's a lot easier to do all calculations with Lambda first and not worry about actual Air Fuel as most wide band software is setup for zero ethanol gasoline, which makes the conversions difficult.</p><p></p><p>I have an ECM 1600 Lambda meter which simplifies things. .84 commanded, .84 on the Lambda meter. Adjust Maf curve based on the fuel trims.</p><p></p><p>What I do (similar to Ford Flex fuel strategy) is dial in the Maf curve on a known Ethanol content gasoline. Once the tune & Maf curve is dialed we swap to E85 and monitor fuel trims. Based on the trims I adjust the Stoich till fuel trims match the Gasoline logs. This gets the E85 tune very close to the actual Ethanol content.</p></blockquote><p></p>
[QUOTE="Shaun@AED, post: 12875884, member: 32381"] It's easier to think in Lambda rather than Air Fuel. Air fuel is stoich multipled by Lambda, but it's a lot easier to do all calculations with Lambda first and not worry about actual Air Fuel as most wide band software is setup for zero ethanol gasoline, which makes the conversions difficult. I have an ECM 1600 Lambda meter which simplifies things. .84 commanded, .84 on the Lambda meter. Adjust Maf curve based on the fuel trims. What I do (similar to Ford Flex fuel strategy) is dial in the Maf curve on a known Ethanol content gasoline. Once the tune & Maf curve is dialed we swap to E85 and monitor fuel trims. Based on the trims I adjust the Stoich till fuel trims match the Gasoline logs. This gets the E85 tune very close to the actual Ethanol content. [/QUOTE]
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SVTPerformance's Chain of Restaurants
The Distillery
if i tune on real e85 will ecu adjust for e70?
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