In the Calc.MAFT and Calc.VET it talks about earlier OS that do not have

6. The pid GM.DYNAIRTMP_DMA is not defined for OS's 19980100, 1998020, 19980400, and some others...
but you can create a CALC.B4901 lookup pid instead, see the following alternate calc_pids.txt:
calc_pids.txt <-- check that this contains the same B4901 data as your tune file.
Is " <-- check that this contains the same B4901 data as your tune file." refering to B4901? The calc_pids file is

"*CLC-00-260
factor 0.0 1.0 .4 "lookup({SAE.MAF.gps}, 0,0.60010, 10,0.17139, 20,0.12842, 30,0.08594, 40,0.08106, 50,0.07129, 60,0.06201, 70,0.05469, 80,0.04736, 90,0.04297)"
"

My .tun is
LABELS Charge Temperature Blending (Factor)
Grams/Second {link: SAE.MAF} Value
0.00 1.000000
10.00 0.687500
20.00 0.472656
30.00 0.407715
40.00 0.319824
50.00 0.265137
60.00 0.189941
70.00 0.145020
80.00 0.125000
90.00 0.095215
100.00 0.075195
110.00 0.069824
120.00 0.060059
130.00 0.060059
140.00 0.060059
150.00 0.060059

Is this what needs to be changed in the Calc.pid file?