Sorry Pete, feel like we left you stranded in the darnkness...
Ok, to my mind you do have a problem.
The good Dr explained his chips have fuel maps + ignition maps.
The Power Commander will interfere with the fuel map- the ecu goes into the PC111 and then into the injectors. This means the signal from the PC3 is the last thing to instruct the air/fuel mix, and will probably disrupt the Rossi map. Not good.
However, if I'm reading + understanding correctly, the chip will still change other things, like the ignition curve. This is good.
In theory the Dr Rossi chip would be more than adequate on it's own, and a poor dynojet map would actually detract from his good work.
Get the pc3 set-up properly though, and you have the best of both worlds. If you can't afford that quite yet, then I'd recommend running without the PC3- just the chip.
Clear as mud eh?
