I bought hptuners used, the guys i got it from has used it a while and says a few years are unlocked, 98, 99, 01 f-bodys,(they all say 6 credits)
Im trying to tune on a 99 and it says i do not have a license to complete this, i have option to "do not license", and in the shadow is "single vehicle VCM 2 credits" or "unlimited vehicle group 19 credits".
under the vehicle group it says upgrade credits 13 and credits required 17 for gen 3 v8 cars