4Z7907551R (2003 2.7T), I've been playing with cam switch timing, but results are not following KFNWSE or any other map discussed in the FR.  I have KFNWSE set advanced pretty much everywhere that's interesting (as first step in working out what's optimal) but cams are retarding at ~90% load.  It's been really cold (-12 deg F to 10 deg F) so could be that there's some function not discussed/shown in the FR at play.  It's not following cat heating or cold engine maps (and the cold engine maps are not active until ~-40 deg F in any case), either.  Logging path doesn't seem to be an option; the 551R.ecu is missing the relevant bits.  No other weirdness, car is running like a champ.  Cams are 0.0 and +3.0 and otherwise advance and retard according to KFNWSE as expected.

Sound familiar to anyone?