Volumetric efficiency table

[Ludis Langens]

I've pulled what I think is a volumetric efficiency table from an ECM.  Below,
the numbers have been manipulated into a more human understandable form.  I
have no way to tell what raw number means a VE of 1, so the raw bytes have
been scaled such that the largest is close to 1.  The rows are labeled with
the MAP pressure in KPa, the columns with the engine RPM.

    |  800 1200 1600 2000 2400 2800 3200 3600 4000 4400 4800 5200 5600 6000 6400
----+---------------------------------------------------------------------------
 20 | .418 .429 .473 .583 .616 .622 .660 .715 .737 .737 .726 .660 .600 .545 .528
 30 | .462 .506 .517 .627 .649 .660 .715 .759 .787 .787 .776 .710 .649 .594 .578
 40 | .534 .578 .594 .671 .693 .704 .776 .825 .858 .858 .847 .781 .721 .666 .649
 50 | .605 .633 .638 .715 .754 .754 .809 .858 .891 .891 .880 .814 .754 .699 .682
 60 | .616 .649 .677 .759 .787 .803 .853 .891 .924 .924 .913 .847 .787 .732 .715
 70 | .627 .693 .732 .798 .825 .836 .875 .935 .952 .952 .941 .875 .814 .759 .743
 80 | .710 .754 .781 .825 .842 .869 .908 .952 .968 .968 .957 .891 .831 .776 .759
 90 | .748 .776 .825 .842 .864 .891 .935 .963 .979 .979 .968 .902 .842 .787 .770
100 | .798 .814 .853 .875 .891 .913 .957 .990 .990 .990 .979 .913 .853 .798 .781

Does this look like a real VE table?  Or is some other data built into each
table entry?  (I didn't expect so much variation caused by MAP differences.)

I do like the sweet spot from around 3 to 5 K!

                   unsigned long BinToBCD(unsigned long i) {unsigned long t;
Ludis Langens         return i ? (t = BinToBCD(i >> 1), (t << 1) + (i & 1) + 
ludis at netcom.com                 (t + 858993459 >> 2 & 572662306) * 3) : 0;}