[quote="Richard L"][quote="JohnA"]I see that the AFR at high revs hovers around 11:1
Have you tried to go leaner? I got most of the gains when being leaner than 12:1, all other factors being the same.]
Of course it will vary the amount of fuel and water being injected, but on my personal car toggling the WI on and off results in about a 0.04 increase in lambda (~0.6 A/F), and I'm running nowhere near 20% water/fuel.
WI appears to have a significant impact on lambda readings. I mention this only to point out that the Skyline may not be running as rich as it may first appear.
It would be interesting if you could perform a similar test to gather some data on the WI/ effect on lambda readings for comparison.
Mike
espritGT3
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