By the way, from my own experience so it may differ. I cleaned my MAF once, a year after my Intake
was installed when I was throwing a CEL. After I cleaned it the CEL was gone. A CEL shouldn't be shruged off for any reason. I haven't touched the MAF since. And this is maybe almost a year, changing filters, and disconnecting the damn CAI
many times. Also tightening the throttle cable seems to be a fix here. It's good maintenance. You can try it, but then again from my own experience (and it may differ) it was only part of the problem or masked it. I'm glad I did it and had to do it again. A low idle should never be a quick tighten the throttle cable on any car. Unless you are the one who's cable went way lose by some misfortunate accident.