MAP sensing for IR systems

[nacelp]

Speaking in the realm of GM ecms:
MAF, in some applications, maybe.  The only real problem with MAF is the lag
of the wire changing temps, and the correction for that.
MAP, shouldn't be a problem, unless you run into problems filtering it, then
Alpha-N.  To me Aplha-N's are just for when you run out of camshaft manners
at idle, and the transistion off idle.  Once ya get over 1,500 in just about
any engine, you should be able to read a MAP well enough to get a handle on
things.  It's the low speed sesitivity that gives you problems, not the lack
of it.
There are two items here, the electronics of the matter, and the
mechanicals.  You need to filter, both to some degree.  The Apha-N, is the
poorest of lot, since it doesn't even do that.  Then if your running a vac
referenced regulator, you got another bucket of worms to resolve.
  Having a foot or so of 1/16", or 1/8", for a tieing things together, isn't
going to make or break the system, IMHO.
Bruce

> >MAP and MAF just aren't fast enough.


----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org