Aim Solo2 DL Configuration
 

It works on my 2000. Sorry I don't have my settings handy, but I would think the generic OBD2 should work? Keep in mind on a AP1 the data you get is really slow, like once per second sampling rate, and there isn't very much useful data. Mainly TPS is the only useful data point to analyze your driving, and it's too slow to be much help. BUT having the AIM display real coolant temp on track is useful, as well as IAT and a couple other things. I also really like having it plugged into the OBDII port so it start when I turn the car on automatically and I don't have to ever think about it.
And I just realized you wrote Solo2. I have the original SoloDL. But some of the above will still apply.

I haven't figured it out either. Can't get it to really pull any ECU info other than speed and I think voltage lol. Not even RPM's. I have an '07ap2.

Forgive my ignorance, but what if OP had an AEM V1? (Like I do)

It might take some custom configuration but you should be able to get a whole bunch of useful data on an 07. 06+ broadcasts things like TPS, brake pressure, and steering angle to the canbus and this can be accessed through the OBDII port.

anorexicpoodle made a good post about this, but it only applies to kpros. https://www.s2ki.com/forums/s2000-ra...1153580/page2/
Might help someone along the way.

Fixed
 

I saw this was a fairly new thread so figured I'd reply. I got a Solo 2 DL last week and couldn't get it to read from the OBDII. Finally got ahold of the right guy at tech support. If you have an 06+ and are using the stock ECU call them and ask for the HONDA_BT S2000.XC1 file. He also sent me the instructions to import it and update the ECU. Worked like a charm!