This is all getting a bit pedantic...what I meant was that AFR is the priority/target...you size your injectors to get a certain AFR at full load and engine speed.
Perhaps I sold Austen short a little here, but I've heard it said far too often that "it's a race car, so it runs rich", etc...and his earlier post seemed to heading in that direction. Of course, more fuel does not automatically equal more power...there is an optimum AFR in a given situation, and richer/leaner will give you less. Apologies if I misinterpretted your point, Austen, but as a one-liner I think it was worth checking.
cheers
James
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