[Gmecm] runing two MAF meters

[Jeff Stevens]

You are correct, at least for the LTx and LSx MAFs I'm familiar with. A
divider would have to calculate an representative "average" value of the
two frequencies.  What makes it harder still is that the MAF frequency
output curve is not a straight line, so a simple average of the two values
will not yield a precisely accurate result.  Might be good enough, though.

I looked into building a simple divider using 3 frequency <-> voltage
converters and a voltage averaging circuit, but the pain involved with
plumbing 2 MAFs was too great.     -LJ

----- Original Message ----- 
From: <bryan_es at yahoo.com>
To: <gmecm at diy-efi.org>
Sent: Thursday, July 07, 2005 11:16 AM
Subject: Re: [Gmecm] runing two MAF meters


> It's been done. Someone on ls1tech did it a few years
> ago. Don't remember the details however. Please
> correct me if I'm wrong but doesn't a the frequency
> what is measured by the pcm for MAF value? I want to
> say I remember it being more complex than a simple
> voltage divider.
> 
> > 
> > i thinking today and was woundering if this would be
> > possible; running two MAF. could you just wire them
> > in series and then divid the proper voltage table in
> > half. kinda like going from a 1 to 2 or even 3 bar
> > map and re scaling the tables?