Quote:
Originally Posted by oil pan 4
Whats the deal with running leaner than 17:1?
When I start to get up near 18:1 I can tell power is dropping off pretty bad.
Is that normal or am I not running enough timing advance?
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On my engine I try to run at least 18:1 and up to 25:1 depending on load. I'm trying to run lean enough to reduce all intake pumping losses. The turbo helps with this verses a N/A engine.
I'm also increasing ignition timing to help out the lean burns slow flame propagation.