Guys,

Is there a check that you can perform on the O2 sensors to ensure that they are operating within the specs?  possibly a resistance check?

I thought this might be prudent prior to commencing Vtune runs which can be time consuming when starting out.

There is a way of checking your sensors using a volt meter off the bike. You require a heat source ( gas flame) and Volt meter, record the Mv reading and how quickly it drops and returns as you heat the sensor. Google it and it will explain. Another not so accurate method is to use TTS Data Master to record a sensor record and have a look at the transitions of the sensors. Start from cold until the sensors are heated up to correct temp. Then zoom in on an area and have a look at what they voltages they are putting out.

Hilly and AJ56,
Thanks for the reply, will nail down the google search later.