Reduced timing still knocking

[nickman]

Hi engine is a K24a1 with ep3 manifold and 270cc injectors. Seems to keep knocking from 2k-4k and cant tell if its false knock. I've reduced timing by allot and its still there. Here's the tune and datalog

[Spunkster]

It could be something loose that is making noise in the engine bay and being picked up as knock.