There's a lot of odd shit going on in that tune file. Idle spark control is really wonky. You have -10/+10 in your zero RPM cells. Why? They're both super aggressive.
BRAF is really weird as well.
The data log looks like you still have spark smoothing enabled but the tune file says it isn't. Need to figure out what's causing the spark saw tooth pattern. Solve that and your throttle surge will go away.
timing issue.jpg
It's in "MAF only". Might want to dial in the VVE and try running it in speed density.