[QWKSNKE]

21-23 degrees of timing is kind of high with your current compression ratio being that you are blown. I realize that you are running low boost but any boost will generate heat (without an intercooler) and limit your timing that you can safely run.

In my opinion you should tune no higher than 19 degrees total timing from about 4k rpm and up at WOT. If you go to a higher boost pulley down the road you will need to cut the timing back more.
Aside from that, your C&L meter is not doing you any favors either