I need a list of things to check because the time before my car is warm sometimes ill have no power and sometimes the front will shake acting like it wants to die, now that its getting cold out i need to drastically find a way to fix it.

The one little sensor that would plug into the stock airfilter is unplugged because i have no where to put it into inless i make my own midpipe because of the k&n filter , i was told this didnt matter at all to the car from the dealership and some other sources but am i wrong? [no not the maf sensor]

All my hoses are connected, new battery, new exhaust cept stock cat, new spark plugs, new fuel filter, jus changed my knock sensor and now this crap starts!?

120k at transmission, I'm planning to change my pcv valve hoping that can help a little bit. (sorry i posted this again but i didn't really get any help the first time and am hoping i can get something out of it!)

 

possibly the coolant temperature sensor, that sensor in the airbox can just be dangling there and its nota problem. check resistance on the ECTS