MAF & base fuel tables

[Knowlden and/or Eller]

Bruce, Jon, after looking at byte 14 bit 2 (analog vs fm digital, I am set
for analog and so are you Bruce), I noticed byte 16, bit 6 "Calc Base Inj
PW, not table" (Bruce and I both have this bit a 1) and this tells me there
is an option and that probably my vette's base PW is calculated. Of course
this gives the challenge of where is the calculation and its variables. By
the way, after little more looking at the MAF tables they are set up to work
with either FM digital or analog. There are multiple tables and they are
scalar i.e. table 1 0-22 gps, table 2 22-47 gps, etc. It looks like "all"
you would have to know is  the freq/volt vs air flow in grams per second.

I feel like I am on treasure hunt.

Regards,

Bob

-----Original Message-----
From: owner-gmecm at esl.eng.ohio-state.edu
[mailto:owner-gmecm at esl.eng.ohio-state.edu]On Behalf Of Ward
Sent: Tuesday, June 22, 1999 3:20 PM
To: gmecm at efi332.eng.ohio-state.edu
Subject: Re: MAF & base fuel tables


Probelbly a very good objective, but you will need to generate new tables
since the flow values are different.
Ward

On Mon, 21 Jun 1999 18:51:11 -0400, Jon Fedock wrote:

>
> -----Original Message-----
> From: Knowlden and/or Eller <ke at clark.net>
> To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
> Date: Sunday, June 20, 1999 6:29 PM
> Subject: MAF & base fuel tables
>
>
> >Bruce, thanks again for the acyc.bin from your '87 IROC. I have become
VERY
> >fluent in promedit. What I have discovered is that my memcal apyp (89
> vette)
> >has no base fuel table. Really, I am sure (as sure as a novice can be).
I
> >would like to know what type of MAF your IROC has. My vette has a Bosch
> >analog hot wire (more voltage output more air)but gm has there own, Delco
I
> >& II, and they have used a Hitachi. Both the Delco and the Hitachi have
a
> >frequency output (the higher the frequency, greater the count, the more
> >air). The '86 disassembly from ecmguy (what a godsend) would accommodate
a
> >frequency based MAF (although the MAf tables appear to be in volts!?). I
am
>
>
> I have asked this question before - I was going to try using a new-style
> "high flow" MAF (they are frequency type). But, as with ALOT of other
> projects, I have  put it on the back burner. If you find out about using
a
> frequency-type in an analog setup, PLEASE let me know. I suspect that all
> you have to do is change the bit at 014, but very seldom is anything that
> simple......Good Luck
> Jon Fedock
>
>





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