I've posted a few weeks ago and it's been a fight since. Local dealer replaced parts for $1000 already, CEL with the same codes still comes up every 2-3 days. P0171 and P0174. Checked at three different locations - no vacuum leaks. MAF sensor replaced. I have Mina Gallery air intake. Can that be a cause?
Please, share you thoughts, guys. I know we have a few pros here.