here's another question, since im looking more and more into the zemulator...the zeitronix controller outputs to a serial port as does the zemulator...kinda sux since there are like 0 laptops out there with more than one serial port lol...now my question is if i just get the wideband o2 sensor, could i get it to output into the zemulator. also i was told most the time only one wideband is needed...would it be better to have 2 wideband sensors or just choose one of the two?