I'm trying to see if my car came with a tune. Reading posts especially from @
steve99 says that I will have to compare my CALID and CVN both which I can get from an OBD2 tool. If the CVN is not from a known good value it indicates that the ECU has been tuned/tampered.
The only problem is - does a list exist of all CALIDs to known CVNs? Tried googling to look for one but there isn't any...