hi i have codes 22and 23 up on my94 wrxsti cel light comes on when hot intermittent iv had code 23 up since fitting an apexi induction kit but unplugging my maf cuts the engine suggesting its fine only thing i have changed this week is put premium unleaded in instead of vpower its been chipped by scott t so should be ok on premium i think should i worry about this as im selling the car next week and dont want to screw anyone over but car seems to run and boost fine up to 1.2 bar as it should any help please guys thanks to shane myblackwrx for the info on codes etc

 

Try resetting your ecu as mine stored the fault code (23) after I fitted a new MAF leaving me thinking that the new one was fooked also.... but after disconnecting the battery for 1hr, the ecu reset itself and the code disappeared.

 

ok thanks bob