he is discussing a normally aspirated engine.
there are other articles on avweb dealing with turbo's that I have read.

"Tom S." wrote:

"Jeff" wrote in message
...
the tape you get with the gami jectors is not very good, but the guy
basically says that you can go lean of peak and not lose power. He even
demostrates it in his bonanza.
Also I have always been told that running lean will increase your CHT's,
running rich will keep your temps down. But gami says that using their
injectors you can run lean and not have a temp problem. I like ROP for the
power and because gas is cheaper then cylinders.

Thing is, you're doing MORE DAMAGE to your cylinders.

http://www.avweb.com/news/columns/182084-1.html