I've researched and can't find exactly what parameters set command AFR at startup in closed loop. I noticed in the very cold weather on startup commanded AFR is going to .55. On start up when under 40* I am seeing .60 eq ratio and rough idle for about 20 seconds and commanded AFR slowly moves up to 1.00 and runs fine. What can I adjust to lean out the startup? VE and MAF are dead in when warm.