Hello, i'm pretty new to messing with ls droid and tuner pro. I'm trying to delete vats for my 05 silverado. I was able to read my pcm with a obdlink mx. Bin file was 12592618. i googled and advanced searched for a XDF file but read from a few threads that its not available yet. I also read that a 04 bin 12587603 is a universal. From that point i found a matching bin and xdf for 12587603. I figured out how to get the vats turned off.

Next i went to write the pcm, but got a calibration mismatch. OS numbers are different.
how would i go about changing my original os number to match my new bin file?

I seen a recent post on this but didn't understand it to well.

Thanks
Richard