K24 Ignition timing jump

[Anjuna]

Couldn't figure this one out on my own.

2002 Acura RSX
2005 K24A2
PRB intake manifold
PWJDM Intake
ClubRSX header
02-04 stock exhaust

I understand how interpolation happens between maps (Just look at my fuel maps, I can provide datalogs that I've tuned to +-2% STFT, cant say the same about high cam tables though) But it seems like there is a rather weird jump in 4 degrees timing around 1.93 seconds (3375rpm). Double checked my tables and compensation, but I cant seem to find where this jump came from... Anyone willing to enlighten me?

[Hondata]

Your knock ignition limit tables are causing the change in ignition timing.