I think my mas air flow meter is bad?

First off this post is about a 93 toyota pickup, 22re, 5speed with no options.

ok this is how it started, my alternator went bad, so I went to autozone and got a new one, put it on and it was charging over 20volts, it fried my computer so bad that the ecu shorted and keep blowing the efi fuse, so I got a new ecu that fixed the blowing fuse and now its running again with the 2nd alternator, now its throwing me a code 24 and 31, code.24 is air temp sensor and 31 is means air flow meter, I am very mechanicly inclined but I cant seam to figure this out, it ran fine before this, now everytime I hit the gas it runs fine untill the pedal gets half way and then it cuts out untill I let off the pedal and goes back to idle and idles fine just kinda low, kinda acts like its not gitting enough gas, but I know it is cause if I try to floor it it goes to about 3500 rpm real fast but wont go any higher and when I let off it pops and backfires, I tried to see if the afm was completely bad by un pluging it while it was running and it dies right away, I plug it back on and it will idle fine. Im lost, could it have fried the afm when it fried the ecu?I dont know what to do, I am allready down 370$ cause autozone wouldnt comp a new ecu even though it was fried due to the bad alternator they sold me. Being that the ecu sent a code 31 and 24 for the afm probily means that I need a new one huh?Or could it have that code and it be something completely different?Any advise please! -Daniel :(