When you begin to look at things with an XDF, there are a lot of things going on and can look intimidating.
I would start with getting the correct injector settings if you have them.
84Elky wrote a good writeup on injector settings.

After that to dial the fuel in, you need to work with the VE table.
But to do so we have to set the code for the MAF, so it will fail it and run in speed density.
Easiest way is to change the frequency high that is reported as a bad MAF sensor to a low value around 1 he's
Make sure the corresponding code is set to fault on 1st error. DON NOT change to NO ERROR REPORTED.
After VE table is dialed in within 5% you can reenable the MAF
Then make changes to the MAF table.
Before you make any changes to your bin, what I recommend is to save file as, then give it a different name.
When you are done tunnerpro will Create a text file that documents all the changes you made.
If you do this evertime it's easy to keep track of what your last bin was Incase you mess something up it's easier than trying to undo what you did.