Engine simulation for bench ecms Simple strategy

[Bruce Plecan]

As a function of TPS, load, rpm, vss, will change. 
  How about this use a pot for TPS, then using that as a voltage
divider apply the output to a series of 3914's and 4066's
So there would be 10 steps for MAPv, 10 steps for rpm, and ten
steps for vss.  These ten steps for the MAP would be for v's
divider string, the rpm would be for a 555 astable with 10 freguencies
and vss would be 10 555 steps also.
  Then maybe something like Chris mentioned for O2 feedback.
Any thoughts about just turning off the malfunction flags for 44+45
to avoid a serious O2 feedback device?.
  Comments?
Cheers
Bruce