If you haven't yet, you could review your logs and make sure you a4 entering PE soon enough, just changing the thresholds a little might help.. No reason to neuter the engine all the time for something that only shows up when it is hot. Also if you do not see a little detonation while dialing in the engine you either have the tune super conservative giving up power and efficiency or a dead knock sensor.
On my 454, I still have the black box, so I am limited on what thresholds I have compared to the 0411, but reviewing closely my loggs while towing, I changed it where it kicks in when needed, only change gave me cooler hill climbs, kr disappeared, towing MPG stayed pretty close, but I think it actually improved, and it feels better.
If I remember correctly mine was set up for throttle and kpa thresholds, and you had to be past both to get PE.