Recently I leaned my map settings on my car using the Link, in hopes of getting better gas mileage, and I knew I was running rich. Now the car definately runs better, but my gas mileage went from 24mpg to 20 mpg based off of the last two tanks. :confused:
Why would my gas mileage go down when I lean the car??? I didn't lean all the mapps just the first three rows where the intake is under a vacume. Driving habits remain the same.