Going rich on start up

[cainsw]

Can someone look at my log and tune and maybe point me in the right direction? I have an issue with my car at start up, temp doesn't matter. It show commended lamda 1.0 but ever time I shut it off and restart it drops to around .80 and slowly starts working back up to lamda. If I start up completely cold and shut it off and restart it, it does the same thing but it smokes really bad for a few minutes and I need to rev it up to clean it out. Could this be an injector going bad or am I missing something in the tune? This is in a 70 Camaro. It is cam only 5.7L Auto LS1 from 02 Vette using 2001 P01 PCM from 5.3L truck. Also, not sure if it matters, using corvette fuel pressure regulator

[Alvin]

Double check fuel pressure.. Make sure it isn't doing anything odd.

Beyond that I'd say more tuning. This is in MAF so the MAF table would be the direct change.

The car will run better if SD side of things are tuned in but it wouldn't cause this.

[cainsw]

So, I disabled the MAF and the issue went away and the car is 100% running better. The main thing I wanted to make sure was to know there wasn't some other possible issue that needed to be addressed before I started actually tuning this thing. I haven't messed with tuning since around 2009 so I need to relearn all this stuff. Thanks Alvin for pointing me in the right direction sir