Don?t know if the full t93 unlock is really needed for me. I have a 2020 L87 like I?ve mentioned before mostly stock gm cold air and catback. Just trying to firm up the shifting alil bit. Can that still be done from the engine only side? With min final shift spark? I played around alil with it and truck acted funny at upper shift points? If I need t93 unlocked to do what I?m trying to do I will. Not looking for anything major just a little more firmness or quicker shift. Just looking for some advice plz.