Re: MAF use and calibration

["Dave Zug" <dzug@delanet.com>]

guess I shoulda read the later posts before saying the same thing ;-}

In the '727 theres coolant temp linearization that uses 2 tables to correct
the sensor curve, hysteresis code there too.

While you are adding code for MAF readings, add a bit to enable a
"anti-reversion" filter for big cams ;-)  anti-reversion mode = during high
load, dont let MAF readings transition more rapidly than X per pass.

MIME is sometimes forcefully implemented on the mail servers (not the
list's, YOURS) , it will translate for you when high security is desired by
the server owner. I'm told this anyway...



----- Original Message -----
From: Mike Rolica <97005620@lambton.on.ca>
To: <gmecm@diy-efi.org>
Sent: Thursday, June 15, 2000 10:33 PM
Subject: RE: MAF use and calibration


>
>
> -----Original Message-----
> From: owner-gmecm@diy-efi.org [mailto:owner-gmecm@diy-efi.org]On Behalf
> Of NickG
> Sent: Thursday, June 15, 2000 11:56 PM
> To: mrolica@meridian-mag.com
> Cc: GM ECM List
> Subject: MAF use and calibration
>
>
> >snip>
> The '165 ECM is setup to use an 8-bit value for the MAF reading, whose max
> is 255gms/sec. To double this, you only need to add 1 bit, for 9 in total,
> not 16. Going to 16bits would increase the range by 256 (not 2).
>
>
>  well that is a givenn:) but it is a little easier to go 16 bit as opposed
> to 9 bit.. he he
>
> but what would ya do with the extra bits :)   (i was thinking making the
> table have finer resolution.. but you then run into the problem bruce
> noted... the spikes and surges of the varying output of the maf....
>
>
> > I'm working on that right now by adding a table like the ve on the 730
>
> Please let us know how it turns out. Inquiring minds want to know :)
>
> Nick
>
> ps. could you look into turning off the MIME encoding when posting to the
> list? Thanks :)
>  umm the mime is off all plain text here.... i emailes orin and he said
> every thing was fine and that it was some other thingy with the mail
> server??  i dunno....
>
>
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