alright i have ran trouble codes on my 93 f-150 and have got them all right here. i am going to post them and could you tell me what they mean and how to fix them.

code 311
Thermactor Air System problem-no operation on engine run self test (bank 1)

code 332
Insufficent EGR flow detected i aint worried about this unless yall think it would effect performance but i dont think it does.

code 411
Cannot control RPM during Engine run self test- low rpm check

code 538
Insufficent RPM change during Dynamic Response Test- this is explanatory because i was in my neiborhood and when i was doing this i could put wide open throttle like it says to because my nabors will get ticked about my exhaust.

so i guess the only ones i need help with is 311 and 411. thanks in advance.