I'm not sure where a target CHT method was mentioned, nor have I heard of such technique. I have heard of the target EGT value for leaning, but that's something different and something I wouldn't have a problem with. I have described 380 CHT as a maximum value, as it is possible to be running outside the red box and reach this value.
Mike is a pioneer in that he dissimates this information to the masses. I was learning from Mr. Busch long before I heard of APS. I understand a lot of LOP and engine management research has been done by the founders of APS, and I will be a customer of GAMI injectors when I go non-carb, but this information is too important to be kept from the masses and only taught to those with $395 and a high speed internet connection, especially when the engine manufactures say to run 50 ROP and suggest a CHT limit of 500 degrees. Notice I didn't mention Lycoming by name.
My thought on APS. Don't get me wrong about the people of APS, as they are aviation GIANTS in my mind. But if you're going to spend decades in this level of research, it cannot be expected to recooperate even a small amount of the investment. This is something that would be done for the betterment of the aviation community and nothing else. I have read testimonials from the students of APS and one in particular struck me as odd. I will quote it directly from the website:
"In ten years everyone will be operating the way these guys are teaching." --Dr. Jay Apt, Astronaut Bonanza & Twin Beach Owner
Why 10 years? Why not now? Because those that don't know about the teachings of Mike Busch or Deakin's (free) Pelican Perch, this information would be hidden from them. This is why I'm a Busch fan. He is extremely giving with his time and genuinly wants pilots to know how to better their engine managment skills. Because of this, Savvy Maintenance is growing by leaps and bounds. Now there's the business model.
Lastly, I do appologize for the harsh words, but you come in here as an "expert" flonting the APS logo. As I stated, there are more than a few on this forum that have been there, done that and have every bit of knowledge as the 2.5 day course. Notice I didn't mention Byron, Chris, Bob, Ross, Tom, ect. by name. Dang it!
As far as the graphic goes, it's from EAA webinars by......drum roll.......Mike Busch.