Ok so the SAFC II is fully installed and setup. My question is: is there any amount I can lean it out to make more power/ get better fuel economy before I take it to the dyno in a few weeks? Or should I just wait to have it tuned all the way correctly?

Also does the throttle reading have anything to do with your air/fuel ratio settings?

 

Having an O2 voltage of about 0.9volts will ensure sufficient safety for you to reach zie tuning place. For best power/safety, you will have to use the dyno.