Originally Posted by
engineermike
In case anyone else is looking for answer on this, I found a solution that works. Under Torque Management->General->Torque Ratio Clips->Upper (CSER), I changed the value from 0.86 to 1.00. Now, the spark timing ramps up to typical values before exiting CSER mode. Deep down, I know this is still a band-aid because every Mustang calibration I've seen uses 0.86 for this value. However, I'm also certain this solution is better than butchering the BKT and MBT tables and manipulating the Emissions Reduction Distance Tables to influence spark timing.
I still can't explain why populating all the Emissions Reduction Spark Base and Adder with all 0's or all 55's didn't seem to affect it. The Gen 2's seemed to find success with this. All I can figure is that the Gen 3's handle CSER spark timing differently, perhaps based on Torque Control rather than relying on the Emissions Reduction Spark tables.