Neil, I misunderstood - I was under the impression you were just replacing the pot. If it is the entire airflow meter ass'y, and it is the correct part# for your car, it should be a direct plug-in replacement, no cal required.

Since you have the new one in hand, though, taking some readings and making up a table of your own would be very handy for future reference. According to Bosch, the pot taper is non-linear, providing a simplified acceleration enrichment program in the ECU (more enrichment needed near idle than at higher rpms). For this reason, the more measurements you take - and the more accurate - the more useful the results. Note though that there is a resistor in series with the wiper arm for protection. That means you can expect resistance readings to always be offset by the value of this resistor.

Steve