For tuners, a Holy Grail of Injector voltage Offset - ZR-1 Net Registry Forums

XfireZ51 · 11-24-2013

Marc,

As I pointed out earlier, Learn checks ON once the Open Loop AFR is commanded to be the equivalent of the O/L AFR bias in the Constants section of the calibration. Any richer than that and Learn will remain off although you could still be in Closed Loop. 170F is 77C which is right about the point where the AFR makes that transition. In colder weather it takes longer to get CTS up to 80C
And if the fans kick on, you have a situation that takes you below the 80C threshold. Need to get heat into the motor in order to maintain temp that keeps the system in C/L and Learn.

11-24-2013	#29
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,685	Re: For tuners, a Holy Grail of Injector voltage Offset Marc, As I pointed out earlier, Learn checks ON once the Open Loop AFR is commanded to be the equivalent of the O/L AFR bias in the Constants section of the calibration. Any richer than that and Learn will remain off although you could still be in Closed Loop. 170F is 77C which is right about the point where the AFR makes that transition. In colder weather it takes longer to get CTS up to 80C And if the fans kick on, you have a situation that takes you below the 80C threshold. Need to get heat into the motor in order to maintain temp that keeps the system in C/L and Learn.

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