The question you really need to address is this:

It takes 13hp to move the Miata down the road.  How can the Miata most efficiently make 13hp?

My best guess is that setting the fuel to leaner than stoich and using wider throttle openings is the answer.

-Chuck

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[EMAIL PROTECTED] wrote:
In a message dated 6/13/2008 11:08:54 A.M. Eastern Standard Time, [EMAIL PROTECTED] writes:
My understanding is, that when going for fuel mileage, anything past Stoich is counterproductive. It reduces fuel, but also power.
While it's trued that using more fuel (to a point) will provide more power, the MPG will go down simply because you're using more fuel.  As I recall, testing by lots of folks has shown that leaning out the mixture produces more power when the mixture is too rich (primarily because we're all concerned about running too lean, and therefore, we tune in higher fuel delivery, lower air to fuel, than necessary.)
I think that Bill or Keith spoke about this a long time ago when discussing dyno tuning and mixtures.




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