ls1 Edit Timing Tables
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ls1 Edit Timing Tables
I found this as i was viewing some sites. It brought up and interesting point.
IGNITION
Load vs. Advance:
There are two tables, one for 400-4000rpm, and the other for 4000-7000rpm. These tables contain the commanded spark advance values for each set of RPM vs. Load values. If the rpm/load falls between data points the computer will average to determine the correct value. WOT values will be typically in the 90-100KPA range, depending on how much vacuum you pull at WOT. It should also be noted that there appears to be a separate value that increases timing at WOT - values in the table still change the total advance at WOT, but there is another value adding on to them .
I remember that Parish or big tex had set the two tables to 22 deg, but were seeing 24 or 25. From what i have heard and read there is a different mulitplyer that adds on to the timing tables. Sort of like the PE vs. Rpm table. I believe it correlates with the IAT and the coolant temp. Just thought i would share some info i learned.
IGNITION
Load vs. Advance:
There are two tables, one for 400-4000rpm, and the other for 4000-7000rpm. These tables contain the commanded spark advance values for each set of RPM vs. Load values. If the rpm/load falls between data points the computer will average to determine the correct value. WOT values will be typically in the 90-100KPA range, depending on how much vacuum you pull at WOT. It should also be noted that there appears to be a separate value that increases timing at WOT - values in the table still change the total advance at WOT, but there is another value adding on to them .
I remember that Parish or big tex had set the two tables to 22 deg, but were seeing 24 or 25. From what i have heard and read there is a different mulitplyer that adds on to the timing tables. Sort of like the PE vs. Rpm table. I believe it correlates with the IAT and the coolant temp. Just thought i would share some info i learned.
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