Quote:
Originally Posted by E4ODnut
On any of my engines I've found that ~ 18:1 is about as lean as I can go without a lean stumble. 17:1 seems to be sustainable, but only under quite light loads.
Why would I want to consider EGR?
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advance your timing for lean burn, and increase throttle position a touch. this won't work very well on a boat - too much load.