Really bad acceleration through first, second and third, poor mileage

My truck has recently started sounding like it's sucking air horn blowing air possibly. I have 3 codes that are the EGR and the bank 1 sensor 2 code is going off for the heater circuit and not responding to fuel cutoff something like that. It has a new cap, didn't do the rotor. Rotor, new wires, new plugs. Yesterday new fuel pump Fran fuel treatment. I clean the EGR valve. I've done starter fluid around the air intake and what not. I didn't get any high-revving or anything like that. Just wondering if anybody could help me out. Really bad acceleration through 1st 2nd 3rd. Sounds like good ain't going nowhere by me and it does but I like it used to I'm swinging on for at least a month or so. And oh my gosh mileage has went down significantly could help me out that be great.

The EGR gasket was a little rough and I noticed black marks that seemed to indicate that exhaust was blowing out sorta around the gasket holes. But when I did the starter fluid around it it did nothing.