Suggestion. Make sure you filter (cleanup) the datalog. An example is to select the rpm range such as 700rpm - 6000rpm. Go thru your datalog and you may find some strange entries such as 14,000 rpms etc. You don't want those in your datalog when you have EA calculate your MAF curve. Click on the Filter tab and check out what you can filter - play with the filters. Filtering will not change the original DL.
Note: All of my datalogs contains at a minimum - lambs(Kamrf), tps, 02s. But as stated above check out the help tabs - it will tell what is needed in the DLs.