Negative timing in boost. no KR

[123killagum]

hey i was wondering if anyone would look at my log and tune. my timing table is set at 8* in boost so i can start tuning it but i get as much as -10* in boost sometimes. you can see it in the log at 10:49 ish. I have changed the min spark advance vs. rpm to 6* in the past and it runs great. but i know thats not the correct way to fix this issue. please help thanks

[RonSSnova]

You should fix a few things and try again.
In the spark section:
Advance Tab
Zero the AFR Advance table. This sucker will add timing when you don't want it to.
Zero the Cat Lightoff table.
In the ECT Advance table, I would 0 the 203 and 212 columns, maybe the 221 as well.
If you don't have EGR, 0 that table too.

Retard Tab, Burst knock Retard, 0 the "vs. rpm" table


An interesting thing to do that adds to your learning would be to log all of these parameters in your config and see just which adder or modifier is active when you hit these points.
Add them to the Primary Table.
You will find them under Engine/Advance.
Add Burst Knock as well. It's under Engine/Retard.

Ron