ECU clock speed, FUELPW and INJDC

[SOAB_465]

I'm trying to see how much injector I've got left. I'm logging FuelPW1_21MHz and INJDC_21MHz, but I'm not getting credible values. I've got a few questions:

1) How do I identify my ECU clock speed? In the table in the Fuel Write up, all 1998 ECUs are 21MHz. Is that correct for my BAI1 box code? (98 mustang GT 5 speed)

2) If that is correct, is INJDC_21MHz the correct payload to be watching for injector duty cycle?

3) if both of those are correct, is there anything else I'm doing wrong?

FUELPW1 is about 3500 at 6000RPM WOT, which is the same as I'm logging in Livelink, however FUELPW1_21MHZ is returning 0.07 and INJDC_21MHz is returning 0.00. Using the conversions in the ADX file (if I'm referencing the variables correctly) I calculate INJDC_21MHz is 0.0015.

I don't mind creating my own calculated item if I know what the forumla is.

Is it as simple as 3500 ticks / 0.0000045 ticks/sec = 0.01575second PW?

then at 6000RPM 100% DC is 0.02 seconds, so INJDC_21MHZ is .01575/.02 = 0.7875?

I just want to make sure I'm on the right track before I go up the boost and especially before we get into colder weather and denser air.

Thanks for your help,