Great thought! Fueling is a fascinating subject, especially for our air-cooled V-twins. The Memjet doesn't quite modify the value of the temperature in the ECU; what it tries to do is manipulate the O2 signal in such a way that the engine will run richer(which cools the engine with the extra fuel in the engine). The best and brightest around this forum have written extensive threads on it and the consensus is more or less that, while the Memjet (and other things like it) are well-intentioned, they are barely helpful. The problem is much bigger than the Memjet is able to fix. It would be like having a 8-inch gash and only putting one stich/suture on it. What takes the same idea and executes it flawlessly and thoroughly is the GT-Rx Flash combined with the Auto-tuning Power Commander V. (
https://www.guzzitech.com/store/product/gt-rx-pc-v-at300-ecu-flash-tool/). Not only are there proven, measurable performance gains but also measurable engine temp differences (the exhaust heads cool down by about 40F with this system). I've put it on 2 Guzzis so far (2010 Grivo 8V and a 2014 Cali14) and it is impressive to the utmost. Not only do the engines pull significantly harder, but the throttle is SO MUCH smoother especially in the lower rev range. I live in a Central California town where our summers are regularly in the 90-110F in the daytime and when I made the switch from a Memjet to the Guzzitech system I could tell a big difference in the heat coming off the engine while I was riding around. It may seem "expensive" compared to a Memjet, but when you understand just how little a Memjet does and then consider how much the GT-Rx system does (smoother throttle, more power, lower temperature, less stress on the engine, etc.) it an easy price to pay IMO. Enough so that I budget the system into the price of whatever new bike I'm looking at before I buy it. With the problems you are talking about having, I'd HIGHLY recommend getting this system. You won't regret it; I know I haven't.
~Zack