I have LS3 A6 standalone transplanted in my 77 Vette and everything works great except when I try and use the scanner while my Dakota Digital STA-1000 unit is plugged in.

While the DD STA -1000 unit is plugged in the busy light on MPVI goes crazy and the scanner basically stops or goes very slow, my tacho and speedo still work so the DD STA -1000 and pcm are communicating OK. Unplug the DD STA -1000 unit and the MPVI busy light goes back to normal.

I have checked the CANBus resistance and it is OK 60 ohms all combinations.

I have also changed the CANBus ID of the DD STA -1000 unit but this made no difference.


Could this be a similar problem some people have with CANBus radios?

Anything else i can try?