Ok if you modify a BIN file in TunerPro and then open it in TunerCat will it open normal or will it look strange? I have a "stock" bin file that I tried in both programs and it open just fine, however if I open a file in TunerCat that I modified in TunerPro it seems way out of wack. Like IAC vs Temp viewing the graph in TunerPro its a clean sloping line but that BIN opened in TunerCat and view IAC vs Temp its looks like the mountins, up an down spikes everywhere and it makes no sense? Ever come across that!?