after the Na-t done last week, the CEL came on after drove around 30 miles, run the code got:
24 air temp sensor circuit open short
25 lean exhaust
31 air flow meter circuit open or short

never had CEL before the NA-T car doesn't have any Cat and untuned.

 

SAFC installed and resetted to default setting.
i know i need get the car tuned asap, but i don't know if the airtemp and air flow meter caused by the SAFC.
if the MAF sensor went bad, then it will be waste to bring the car to dyno tune.
what should i do first?

 

nobody had cel after Na-t for maf?

 

if you never had a CEL on before id check the safc and make sure its wired right. i know it needs the airflow meter as an input and then the safc outputs it into the ecu... make sure that wire is not shorting out or loose.

oh and on the MAF it can only be put on one way... im not sure if its blow through or the other one.

now for the other 2... the afc does not interfere with it so i cant help you there. but if the maf is not reading right it can cause the lean code because the maf maps out the fuel

 

i don't have cat on my car, will the bottom o2 through a code? my car is 1992 so odb1