I have been having a knock retard issue for some time and still can't seem to figure it out. I believe I have the MAF within acceptable range but please let me know if you see anything. I am only running wastegate boost (5.5 by my boost gauge) and it seems to always pull timing after about 4,000 RPM. The car is running on 93 only but I can't see that being the issue for such low boost. Could it be my IAT is to high causing it to pull? Any advice is appreciated.
SS of pulled timing
Timing630.png
Full Log and current tune
PullingTimingTune.hpt
PullingTiming630.hpl