Fuel pressure is at ~25psi.
The MegaSquirt doesn't work with the stock IAC, but it will adjust fuel to hit that target AFR. So there's no motor adjusting the idle, the amount of fuel it adjusting it. I had the IAC unplugged since MS was installed. I blocked off the IAC passage way with pennies on the TB and I'm thinking that may be it. I adjusted the flapper again to allow more air in, but I'm thinking it might now be enough. I'm just going to buy a new IAC (luckily the 420a's are only $30
) and reinstall it.