The people that said you shouldn't need a PCMIII if you have a DP ECU are correct, if that's what you meant when you said "DP computer thing". Along with a dyno tune by someone who speaks Ducati, you can put a PCM on your bike to "fine tune" the DP ECU, as it isn't configured to run with an O2 sensor, but you shouldn't need to. For most people, the DP ECU is the holy grail of fueling without any "outside" help, like a PCMusb/III.
The ECU that comes stock will never work correctly with a PCM as it will always look to the O2 sensor and try to look up the correct fueling to meet what it reads from the sensor. If the O2 sensor is disconnected from the stock ECU the same incompatability will ensue.
Good luck,
LA
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