ok guys i really need ur help. when i first start the car up and drive it it runs really good. then after a little bit the check engine turns on. the car will idle at different speeds, it will bogg and sometimes die out, and the throttle response is bad. I checked the codes and they were: 3, 21, 22, and 23. if anyone could help me out here itd be sooo helpful.
code 3 is: map
code 21 : vtec spool selinoid
code 22 : vtec oil pressure switch
code 23 : knock sensor

by the way before my apexi vafc was installed the check engine didnt come on.