B5908 - Fuel Mixture Spark Correction table question
12-17-2007, 05:45 PM
#1
B5908 - Fuel Mixture Spark Correction table question
I have a question about this table. Does this table operate all the time or just in PE?
The row values on this table are in GMEq. Do they translate like the following? Attached is my stock 4.8 table, I added the AFR column.
If so, does it mean given a certain AFR and RPM this is how much the PCM will add/substract Timing?
Does a Negative add timing and a Postive substract?
The row values on this table are in GMEq. Do they translate like the following? Attached is my stock 4.8 table, I added the AFR column.
If so, does it mean given a certain AFR and RPM this is how much the PCM will add/substract Timing?
Does a Negative add timing and a Postive substract?
12-17-2007, 06:47 PM
#2
All the time I do believe, but I think you have your AFR values figured on Lambda instead of EQ. Should be the other way around, above 1.0 is richer and below 1.0 is leaner. As far as timing, positive values add to the final value and negative ones subtract from the final value.
12-17-2007, 06:57 PM
#3
All the time I do believe, but I think you have your AFR values figured on Lambda instead of EQ. Should be the other way around, above 1.0 is richer and below 1.0 is leaner. As far as timing, positive values add to the final value and negative ones subtract from the final value.
12-19-2007, 10:03 PM
#6
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All the time I do believe, but I think you have your AFR values figured on Lambda instead of EQ. Should be the other way around, above 1.0 is richer and below 1.0 is leaner. As far as timing, positive values add to the final value and negative ones subtract from the final value.
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