Going to try tuning my car's VE tables for the first time tomorrow. My question is what should the 02 mV's show for 14.7 a/f? Unfortunately I don't have a wideband yet, so no WOT tuning, but at least this is a start. And, when mV increases, is that an increase in leanness or richness? Vice Versa?

Also, any tips for a newbie to tuning? I'm going to be using datamaster to log, then plug them into the VEmaster, then fine tune from there.

Thanks
Ryan

 

450mV

Higher than 450mV means richer, like 880mV might be close to 12.8:1..