2006 Z06, pretty big cam and headers, car will go into closed loop and then come back out of closed loop for a bit and then back in. Sometimes it will fall out several times before staying in closed loop for the rest of the drive. What?s causing this? I?m assuming the o2s aren?t hot enough but how does the pcm know? O2s are oscillating fine when it falls out, typically cruising under light load is when it goes into open loop. Are there parameters i can change to help it stay in closed loop?
If you look at about the halfway point of this log, you can see it in open loop and switch back and forth a few times. Car was warmed up already at this point as well. Thanks!
ST 3.hpt
ST 3 d1.hpl