Correct A:F Ratio @ WOT?

[Stephen Webb]

> You never,
> ever,
> tune to an AFR.
> You tune for performance and note trends, or validate corrections made with
> a WB.   In tuning you let the engine tell you what it wants, you never try
> to force it to run where you **THINK** it should be.
> A WB is just one more tool in your box, it, in and of it's self is nothing.

So that sort of sucks.  

How often, on an optimally tuned engine, does the A/F ratio deviate
significantly from the "slightly rich" range?  Or, perhaps, how often
does the A/F ratio (on an optimally tuned engine) run lean?

Is the AFR really that poor of a way to tune?  If one has no other tools
in your box to tune with, can you do anything worthwhile with a WB sensor?

-Steve


----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org