Klaus, all I can say is WOW! Your meter does, indeed, sound better than anything else on the market. And it's even compensating for sensor aging, too. This is all very impressive.
The fact that your meter doesn't rely on the calibration resistor, embedded in the sensor connector during manufacturing, hasn't escaped my notice. This is also goodness, since such a resistor must be a discrete value and is unlikely to be the "best" value, even when new. Does your meter's sensor cable still use the sensor's connector, anyhow, for ease of attachment to the meter's cable, or does one just cut off the sensor's connector?
P.S. I apologize for being such a Doubting Thomas earlier in this thread. Perhaps someone at your company could orgainze your responses here into a more extensive FAQ at www.TuneYourEngine.com
for future visitors to your website to forsestall the type of misunderstandings that I had.