Alright, I recently changed my MAF because I had codes for it and also for my EGR. I figured the EGR might be throwing codes due to the bad MAF. So I changed the old MAF but still get codes for the EGR, so ill need to change that soon. Before I changed the MAF I was getting around 28-29 MPG. upon changing it I dropped down to about 23. If changing the EGR doesn't bring my mileage back up, would it be okay to put the old MAF back in? It must be running really lean or something to give me 28-29 mpg and still run like a champ. She's a 01 GT btw. What do you guys think I should do? I miss that better mileage..
