I need help! My 2000 ML55 bogs out badly if I press the gas pedal to quickly or beyond about 1/2 way.

I can't even rev it up at idle.

It almost acts like a clogged fuel filter, but the symptoms are such that I am sure it is not.

Any ideas?

I hooked a computer to it and got the following readings:
P0173 - Fuel Trim Malfunction Bank 2
P0170 - Fuel Trim Malfunction Bank 1
P0305 - Cylinder 5 Misfire
P0307 - Cylinder 7 Misfire
P0306 - Cylinder 6 Misfire
P0308 - Cylinder 8 Misfire
P0304 - Cylinder 4 Misfire
P0300 - Random Multiple Cylinder Misfire
P0100 - MAF or VAF A Circuit Malfunction
P0300 - Random Multiple Cylinder Misfire