Well the only thing that's been put in the gas is the gas treatments and seafoam. The gauge moved, and was almost on F after I got done putting in the gas, but the weird thing was that it was almost on E when I started, and it only let me put 6.8 gallons in it, usually it'd go to at least 9 gallons.
But - that isn't the problem. My main concern is about the MAP sensor, and the check engine light going back off after the car had more gas in it.