L36 + New Oxygen Sensor + Gutted Airbox/!MAFScreen = P0171
By now I am sure the moderators are like, "Oh no, Not this guy again", but I have been having a problem with my car in terms of the fuel economy/air fuel ratio. I just replaced my front oxygen sensor with a new Denso unit, and I have seen an increase of fuel economy (my original goal). However, my SES light has been coming on and off in two day intervals since the new Oxygen sensor was installed, and gutting my airbox/descreening my MAF in a very careful manner. Code P0171 has been coming up on my SES light (thanks to Autozone). This is a lean condition in "bank 1". Can anybody tell me what I should do, I put everything in/gutted everything very carefully giving care to the sensing components of all the electronics involved. Thanks.