Im going to show you how your LTFT get effected by modifying your MAF curve. One is a stock MAF curve the other is multiplied by 1.45 for a large diameter CAI.
Pay attention to the period the cells now cover. Of course the MAF sensor would be reporting different periods, but as we all know the actual airflow values will not be that much different(so adjusting the KAM cells is not all that important). That said, you could not be even hitting a cell as much as you could be, or have a cell covering a large portion of the curve that may effect different RPM ranges that wouldn't see the same airflow values the average was derived from. You may want to adjust your cell vs air mass values to spread the coverage of memory out more appropriately for your intake.
STOCK LTFT KAM CELLS.PNG
CAI LTFT KAM CELL.PNG