CJ wrote on 02.02.09 at 08:24:40:

Guys, do any 3rd part MSTE upgrades (cpu/bus) work by detecting the cache enable lines?

Sorry, no idea...
I just want to note that enabling the cache only on a MegaSTE won't give any speed boost - it has to be set to 16Mhz CPU as well (I guess you know that).
16Mhz with cache off, otoh, also doesn't give any significant acceleration (only a few percent), so, for some reason, Remo's machine seems to be running at 16Mhz + cache on.