thats the lq4 maf. ive got that file. hell maybe i set it to ya already.

open your tune, then open the tune with the file as a compare file. go to airflow iirc and you'll see the maf button. open it, then hit the middle of three windows to see the new file, click the top left of the file to highlight it all, right click, copy, then hit the left window back to your tune highlight it all, paste. then save the file, save as. "rename it"