PE mode in idle?

[ZO6_Bryan]

Just finished a cam install in a '12 ZL1. Mild cam with very little overlap. Runs great with the initial tune I have put in it but it goes into PE after sitting at idle for about 10-20 secs. AFR drops into the 12's then bounces back into 16s before coming back to 14.68 afr. Any ideas why it does this. Never happened before the cam install. Below is the scan and tune and config. See at 3:19 the event. Cam is 227/246 on 120 LS What other info would help?

[Russ K]

Disable the cat test.

Russ Kemp

[ZO6_Bryan]

"Cat Test" or "Cat Overtemp"? I thought that might have something to do with it. How did changing the cam affect it and make it come on at idle?

[ZO6_Bryan]

Disable CAT Test did the job. Still don't know why the cam change brought this problem to the surface.

[LS3RX7]

It might have done it before but the new cam makes the motor more sensitive to the EQR change....

[SICK WS 6]

Gonna have to try this....just started noticing the same thing on mine.