Do you actually know what GAMI injectors are, and what their objective is?
They are replacement fuel injectors and control unit. The control unit is programmed to even out CHTs for all cylinders for your specific engine. The injectors are manufactured to much tighter tolerances than the stock units.
Apparently, with the Lycoming fuel injected units there can be huge differences in CHT from one cylinder to another.
There was an article in Flyer a couple-a-months back.