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Well, despite the turn some comments have taken, I guess this subject is now intriguing the old motor builder in me.  Couple of questions:

On this issue of flow, and Scott's assumption that a motor is flowing 513 cfm.  Assuming the number is correct [again, the number has only been assumed so far], why is it a bad thing?  I mean, my concern with non-turbo motors in the old days was creating a lean condition / detonation, which in turn led to destruction in some form.   Does the turbo thing create some different problem?  If you have good exhaust gas temps [egt's], and, from what I see, Eric's are very good, fuel certainly is not a problem, correct?

Where am I going wrong here?  I mean, no lean condition; no detonation; good egt's; isn't that really more to the point of it all.  

Confused by it all,   Bruce