Hey Mark,

I'm using the 2500S xdf file you posted here to tune a 0411 PCM with an LT1 an EFI connection conversion harness and reluctor. Everything has worked great except I can't seem to find where the tach resolution settings are stored. Is that exposed in your xdf? If not, is there any way I can help search for the high and low res tach settings? I'm sure this will help others who want to put the 0411 in an alternate vehicle since the tach output would need to be changed.

Thanks.