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Air fuel ratio for power

1K views 1 reply 2 participants last post by  brenx 
#1 ·
I've recently rejetted my holley HP DP from #73 prim and second, to #76 primary, #78 secondary, as my dyno AFR was leaning out to 13.8:1
I seem to have lost some performance. Does a leaner condition give more power? Can I increase total advance as it is less likely to ping now? Will more spark help with more fuel?
 
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