I'm the lucky one who bought and tested the Jet MAF Sensor.
3 Street Runs with OEM doing 0-60 MPH, 3 Street Runs with JET just 5 minutes later. Best Run was OEM by 1/10 sec I believe it was. Data logged with UpRev Cipher.
I sent the JET MAF Sensor to UpRev who eventually Dyno Tested it and came up with an insignificant difference in AFR and performance. Slightly Leaner, but so incredibly small, it was a statistical tie.
JET Claims to have reprogrammed an OEM MAF (Part Confirmed), but it makes no difference in performance. It's only advantage, is it only cost $135 vs ~$200+ for an OEM from Nissan.
I kept it on my truck upon its return from UpRev; simply for bragging rights, I'm able to show another Sticker on my CAI Breather Tube! I kept my OEM as a spare.