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The dyno posted by Ponyboy here http://www.nsxprime.com/forums/showthread.php?s=&threadid=32378 got me thinking.  What is the optimal A/F ratio for NA engines?  To me, the a/f here on the dyno(~13.5) at the top end seems to be about perfect for N/A engine.  Go leaner than that and it'd be dangerous even for NA engine I would imagine.  But would there be any benefit in richening it up a bit on the top end? 


Also, if you are to advance the timing at the top end, would it help much?


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