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tpepmeie · 03-28-2008

The E-Light (for Economy), or shift light, is primarily a function of throttle position and RPM. There is a delay feature which sets the time at TPS to enable the light. The lamp can be activated once Coolant Temp, speed, MAP, TPS, and RPM thresholds are met. There is a forced activation at a certain RPM as well. That is what is mostly adjusted for different "Shift Light" rpm preferences in custom calibrations.

So, yes, it may seem a bit random as to when it lights up, given the various criteria involved.

By the way, this function is disabled (but still present) in the later release service calibrations. And removed altogether in some 93-95 calibrations.

Todd

03-28-2008	#7
tpepmeie Join Date: Aug 2005 Location: Fishers, IN Posts: 812	Re: Q: SHIFT UP The E-Light (for Economy), or shift light, is primarily a function of throttle position and RPM. There is a delay feature which sets the time at TPS to enable the light. The lamp can be activated once Coolant Temp, speed, MAP, TPS, and RPM thresholds are met. There is a forced activation at a certain RPM as well. That is what is mostly adjusted for different "Shift Light" rpm preferences in custom calibrations. So, yes, it may seem a bit random as to when it lights up, given the various criteria involved. By the way, this function is disabled (but still present) in the later release service calibrations. And removed altogether in some 93-95 calibrations. Todd