Is there a chart that shows the best timing settings for the rpms, the stock setting is for the lower rpm that the stock motors turn I am assuming. Sence these pumps have no advance in them it would be best to set it at the rpm that you are crusing at on the freeway I would think.

 

The stock timing setting is more for pollution control. Bump it up to 15-15.5 for best fuel economy (and more NOx emission).