Djet MAP Sensor Testing - what inductance?

Hello all,
After reading the P. B. Anders website about Djetronic, I always wanted to test my MAP sensors to make sure they were functioning well. I bought a multimeter that measures inductance and, finally, yesterday I carried out the tests. I have a Mercedes 280E from 1972, one of the earliest produced cars made in June, which is running well, with no apparent problems. I also have a MAP sensor from a 1975 280CE. It's running condition is unknown as I stripped it for parts without doing more than starting it. Both are part number 0 280 100 111.
I first carried out the vacuum and resistance checks which passed. I then carried a test of the inductance versus vacuum.
Following are my results:
 
My question is, are these values about where they should be? There is quite a bit of difference between them, The spare unit has about 0.04 more inductance at idle and about 0.1 more at part and full throttle. It would tend to run about 10% richer than the one on my car, if inductance is proportional to fuel injected. A point to note is my car gets good fuel economy, it is 10.5l/100km freeway running and about 12.5 - 13.5 around town. Bare in mind that this car is a manual so add about 10% to these figures for an auto. How do these figures compare to other MAP sensors tested that have the same part number? Would Bosch have modified the setting of these sensors over time, possibly to correct running issues? I tried looking on the website for a graph of typical values but couldn't find it.
Thanks and regards,
Lance Smart.
 

Hi,

well there are many dependencies on MAP sensor. It varies with frequency, environmental pressure and vacuum. 10% is definitely too much deviation.

Hello Dr Djet,
Thank you for your reply. However, I am asking if you have done an inductance test on a 0 280 100 111, and if so, were the values you measured similar to what I have measured? I am trying to find out if my MPS sensor is functioning as it should or if it has a problem. I can't determine this without a unit to compare to. The values I am getting are significantly different to what PB Anders measured. I know he is using a Porsche 914 MPS, but I would think that they aren't that much different. The 10% difference I am getting between the two is not critical, it may be due to a problem, or Bosch changed the calibration. I just need to know if mine are OK.
Regards,
Lance.