Were they talking about the cam timing. they do have some issues with the control solenoid. Maybey that is sticking intermitently. that is pretty expensive and labor intensive. the cams have to come off to change it because its a sleeve arounf the end of the exhaust cam. You could try doing an engine oile flush and see if the cleans out the passages through the solenoid. No codes though huh. It will eventually get worse and set a code or two.
