Hey mate, sorry I assumed you were using some other software so you could just copy and paste the tables into excel, make the changes by formula and paste back into the tune file. I didn't know you were editing the tune in hex.
I didn't choose the COS3, it was the OS that was on the 3rd PCM I'd bought to try and get the car running. I had the 1074 OS which had XDFs, but Dimented's LS1 Flash tool bricked them both when trying to change to a different OS, so I was stuck with what I got.
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