Mafless Tune Help

Hello everyone, I'm brand new to the forum. I've been researching through the mountains of info in this Forum and figured id ask for help instead before I mess anything up. I've been playing with it by uploading different stock tunes but I've had no luck so far.

It does not have the MAF(completely removed) only a Intake Air Temp sensor.

I am having issues with startup and idle. Im sure its because its mafless

It drives good btw

I got a C10 5.3 w/ 4l60e Automatic Swap

mods: Intake, headers, catless

I have uploaded the tune and a datalog

Im probably gonna get some heat from what was done on the tune but hey im trying lol

I'm willing to pay someone to help me get it dialed in or whatever I need to do

The help and tips are appreciated

why not put a maf on it?

The MAF isn't really needed, they can run just fine without one.

Are you running o2 sensors at all? I notice bank one is at 450mv, which is like it's unplugged and bank 2 is kinda doing nothing.

Did you set the P/N base running airflow to zero's? I don't think it should be that way.

Also the cylinder volume is wrong, the computer thinks it's a 6.0 and not a 5.3 so all the airflow and fueling calculations are off some.

There are also no MAF DTCs set in that log file.