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AEM 30-71XX Infinity Stand-Alone Programmable Engine Mangement System Full Manual User Manual

Page 245

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Tuning Guide

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© 2014 AEM Performance Electronics

Units: Flex Content % vs Frequency Hz
Description: This table is used to find the flex fuel (ethanol) content based on the frequency
input from the flex fuel sensor.

FlexCrankingAdder
Units:
Flex Duty vs Flex Content % vs Injector Pulse us/10
Description: This table is used to increase the amount of engine cranking fuel injector pulse
based on the fuel temperature and ethanol content. This an additional increase on top of the

CrankVETable and LambdaCrankingTable.

LambdaFlexBlendTable
Units:
Blend Factor vs FlexContent %
Description: This table is used to determine the final lambda target when using flex fuel. It
blends the target lambda values between the LambdaTargetTable and the
LambdaFlexTargetTable. The X-axis represents (ethanol) fuel content 0.0-1.0 (or 0-100%
Ethanol). A value of 0.0 means 100% of the lambda target value will come from the
LambdaTargetTable. A value of 1.0 means 100% of the lambda target value will come from the
LambdaFlexTargetTable. As an example, a value of 0.3 means that 70% of the lambda target
will come from the LambdaTargetTable and 30% from the LambdaFlexTargetTable.