Stumbling on acceleration

[fixkick]

Ok I started with the MAF since that's what I understood to be the most likely culprit. I did unplug it like I read above and it ran good. I removed it and cleaned it with some CRC MAF cleaner. Once I reinstalled it I cranked it up and it fired right up. No usual stumbling around. It ran good for about a minute and then threw a P0102 code (Mass or Volume Air Flow A Circuit Low). Tried clearing it a few times but it returned immediately. Now I'm wondering if cleaning it somehow exposed an issue and allowed it to throw the code, or perhaps, it wasn't totally dry. I did let it sit for a while and I didn't see any moisture. I do have another engine here that I can pull a MAF off and swap it to mine. Maybe I'll try that tomorrow.

first may I say , 2 problems,  can be hard to diagnose. ( p0102 mean maf is dead a 0 volt output to ECU, keyon nostart MAF output pin is 1vdc not 0v.)
In this case,  not doing fuel pressure first, 
if the car had bad gas, because car sat for 2+ years and fuel went bad or tank filled with rust , and the injectors clogged up

1. then the FPR pinch test shows power returns,?
   
2. and the maf pulled off line test shows power returns.?
   

both tests, cause false  and illegal fuel pressures or false longer injector pulses respectively,  hiding or masking whole and in part, clogged up injectors. (1/2 clogged , oh boy hard)
see?
I must say both tests,  1 and 2 are both wise , prudent and expedient, to finding real problems. 

idle speed 800rpm fuel pressure is, (30-37 psi)
wot fuel pressure is  36-43 psi,  same as keyon no start. note the 6 psi rise.!! the FPR job1.