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Lean burn, lean burn, lean burn...
Why havent yall thought about controlling the EGR valve instead? Or placing a second one to increase the flow during low load operations... ?
It practically does the same thing as lean burn, but more safely, does not increase emissions (actually decreases it), acts as a WAI, etc etc etc.
Don't get me wrong, I have thought about doing lean burn, but its not that simple since the engine has so many variables into controlling AFR. Instead, just keep it at 14.7 but add less oxygen (exhaust), AND it also keeps the CAT happy.
Thoughts? I am about to go either route, but I am seriously thinking more and more about doing more EGR (mainly because of reduced emissions)
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