I replaced my air filter today, but forgot to plug MAF back in. After 10 mins of idling, the car starts to shutter really bad. I realized I forgot to plug the MAF, so I quickly turned the car off, plugged the maf in and started the car again. After a minute, the car starts to shutter again and I immediately turned on the data logger to log it. It smoothed out in 20 seconds. The AC and blower were completely off. I am really puzzled of why it happened, the car shuttered twice, with and without MAF plugged.. As you can see, the rpm and maf readings were all over the place.
Data log here: https://docs.google.com/spreadsheets/d/1xlJa66LP_KBpq675iWd37M4PlgtcIxMbstRxssR7jzU/edit#gid=0
Thanks in advance for any suggestions.