Pulse width readings high

I have been logging and looking at the injector pulse width readings to figure the duty cycle on them. I am using the latest DA2 files from this website. I have a 92 Corvette LT1 M6. Using the formula I found to convert the BPW to duty cycle, I am getting some unreal numbers. At idle Idle it reads about 10-11ms, at 4400 rpm it may be as high as 42ms. So I did a log with Datamaster and the readings are about half of the readings in TunerPro. So I tried the SnapON scanner from work and the readings matched the readings in the Datamaster log. So my question is do I need to play with the conversion formula in the definition file to get the correct reading? Anyone know the correct formula? And if anyone knows if I am doing something wrong. Other values look correct except the MPH, which is off because of the 4:10 gears I installed. I used a digital box to convert the speedo, but I hooked it up to the wire from the PCM to the CCM. The VSS does to the PCM first.

Thanks