Spark Tables for New Cam

[Superlite]

New engine rebuild nearly complete. I went from a stock GM cam to a stage two Cam Motion replacement (stock specs Dur 204/213 Lift .520/.521 and LSA 116. Stage 2 specs Dur 214/220 Lift .553/.553 LSA 115 +3). Not a huge difference so I'm hoping the current tune will get it running enough to tune it.

My question is about spark table 12660 (GM E38). The description says: "Max Torque Timing vs RPM vs Cyl Air. Theoretical spark advance that delivers max torque. PCM torque calculation routines reference this table when estimating current engine torque output relative to theoretical maximum. We do not recommend modifying this table."
1. How critical is this table after the cam change to the ECU doing its computations?
2. Is there a way to update this table to match the new cam?

The current tune was done by a regional tuning house. Based on forum discussions I think the following need to be corrected:
1. They made Hi Octane spark = Low Octane spark. Best that they are not equal, correct?
2. Assuming the engine runs with the new cam and existing tune, other than setting timing until a cell knocks and back timing off, what is the best way to find the optimal timing without a Dino?
3. Once I have adjusted cells where the engine actually collected data, how does one build the rest of the spark tables?

[biholliday]

i just took the high octane table and added 2 degrees did a 15 minute log and then subtracted any knock that shows up from that high table. then i used the smooth feature then load it into the tune and repeated this several times. once i was happy simply copy to low octane table then minus 4 degrees to the whole table. as a side note you can add a can of octanium booster to your 10 gallons of pump 91 and add 4 degrees to your high octane table and still have 0 knock if you dial it in enough. some people might say no but my car responds excellently. i have not modified my MTB table