Hello looking for some help I just recently got a 05 endeavor LS 220,000 just recently installed a new MAF and my gas mileage has dropped I mean 100 miles to a half at 75mph was pretty windy though now I'm getting codes for running rich on both banks and waiting for front wheel hubs to come in.i guess my ? Is would the hubs cause my gas mileage to drop if not what should I be looking for.thanks