I've done another day in 100+ degree heat, this time on my usual 98 Octane gas. It still pinks (UK word for it!) like there's no tomorrow. 
Worse still, it runs WAY too hot. The slightest delay in traffic, and the engine warning light is on, meaning that the head temp is too high. Way too high. In a nutshell, this system is not usable in a hot climate as it stands.
All I'm doing on my vacation is worrying about my engine, and NOT because of my epoxy, which is fine.
Jim
Jim, yours is all fresh hardware and software recently supplied and installed. That's unfortunate you're having this experience, and more so that you're doing do while on your trip.
Fitzmaurice at Zippers had written that the data supplied to them was "good data to work from" so I'm choosing to be optimistic that efforts, once supplied, from them will make a positive difference. I will be trying their revised map this afternoon and will let you know how it's doing. Hopefully the problems are as simply corrected as a map revision. Will let you know how it goes.
You're seeing it with a better grade of fuel than can regularly be had around here too. 91 or 93 as top options at some stations is not uncommon at all. Your experience at 98 is even more worrisome though.