z32 MAF Intermittent issue. Need Help.

[SR20HAYES]

I finished a turbo upgrade on my sr20. I'm using a ROM tune that is tuned for my turbo, injectors, and z32 MAF. Since the Install my car sometimes idles perfect and other times a little bit rough, nothing serious but it does bother me. I'm also having an intermittent problem while driving normal through city traffic. When I let off the throttle then get back on the throttle my AFR goes completely lean and my car is very hesitant and does not want to accelerate. I usually throw it in neutral and stay off of the throttle until I see my AFR go back to normal and then the car drives normal again. This issue happens very random and does not always happen. I have preformed a fuel pressure test and when the AFR goes lean the fuel pressure is normal and will even raise as I push on the throttle. So fuel pressure is not the issue. I had my ROM tuned ECU sent back for testing on another vehicle and the tuner said that they didn't experience any of the issues I'm having, so the ECU checks out fine. My next guess is the z32 MAF. I don't have anyone to test it on their car or to even lend me another known working z32 MAF. So I wanted to get some more opinions before I buy another MAF because I just spent $80 on this one a couple months ago. Anyone ever have a similar problem or can at least back up my theory of it being the MAF? All help is greatly appreciated.