Comparing different OS

[dieselz28]

Tried comparing a Vette OS to a Trans Am OS and it would not let me is there something I can change to do comparisons with different OS's?

[Tordne]

It is not possible in V7 to compare calibrations with differing OS #'s. It will be possible in the V8 tune tool when release. But or now you have to open two tunes and do a side by side (manual) comparison.