Hello,
The PCM you have is fully OEM except for the CLTO delay. I originally had paid for a custom tune from DC, but it was above and beyond what they could handle on a mail order basis. We opted to keep that one item changed when putting it back to stock, as it REALLY serves no purpose other than to ruin FI engines and drive tuners insane. I didnt pay 600 in the end... but it sure as hell was an expensive attempt anyway! haha.
The PCMs are "locked", and at this time, DC is the only company who has the software to work on them. There are others working on it however... BIG names who will offer End User tuning ability.