555 EFI again...

[Walter Petermann]

Bruce Plecan wrote:
> 
> -----Original Message-----
> From: Walter Petermann <corsaro at brokersys.com>
> Subject: Re: 555 EFI again...
> 
> >Here it is:
> >
> >http://brokersys.com/~corsaro/wiring_diagrams/555fe.htm
> >
> >let me know what you think.
> >
> > Walter
> >
> Has this actually been used?.

  Nope, but Frederick is going to try it. I have absolutely
  no use for it :) . Maybe one day I'll rip off my feedback
  carburettor, that hasn't fed back anything for a long time,
  and try it.

> Or is this more of a design exercise,

  It is for me..I haven't designed anything for a while and
  enjoyed doing it. By the way, I have already made one correction:
  The map was connected to the wrong side of the op-amp. 

> either way really doesn't matter, having someplace to start is
> terrific in my book.  Is the MAP sensor the GM one?.

  I think so. The specs he and others gave me were 5v at
  atmospheric pressure, decreasing voltage with increasing pressure
  and 40ma current draw at full boost. 

> I can just smell the smoke now...
> Cheers
> Bruce    Staff members are now checking Gas Mask Filters....


  The nice thing about the circuit (if it works) is that
  only one op-amp is needed for each new function. It should
  be easy to add engine temp, air temp etc. Maybe even an O2.
  Also, you could put a shift register on the output and
  have sequential injection!

   Walter