Installed the K-T 435 flash today. Quick 30 minute drive this morning felt really, really good. Will do 150 mile trip tomorrow. The car feels quite a bit snappier, from all revs. I've reflashed a number of cars and sportbikes over the years and this one feels really well-engineered - no stumbles, flatspots, CELs, or other weirdness. May try to do back to back OE 400 vs K-T 435 dyno runs at some point if I can find some time.
The process is dead simple - K-T sends you an OBD dongle and cable, you download a program onto your laptop and connect it to car with the cable, it reads your car's info then you take a screenshot of it and email it back to Komo Tec. A few days later an email came back with OE flash, 91 oct flash, and 93 oct flash. Takes less than 5 minutes to load the new flash onto the Evora.