[Diy_efi] pic based afm -> maf conversion

[Becker, Damon Damon]

Because this is simple harmonics, it will be dependant on the "forcing
function", which is the engine speed.  You might therefore have to vary
the filter strength based on RPM.   

-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]
On Behalf Of Ashley Evans
Sent: Wednesday, January 18, 2006 1:08 PM
To: diy_efi at diy-efi.org
Subject: Re: [Diy_efi] pic based afm -> maf conversion

Becker, Damon (Damon) wrote:
> Door dynamics (harmonics) will be your major enemy in this setup.  I 
> have personal experience in this.  Boy, did THAT take a long time to 
> figure out (as you can imagine).  The AFR was swinging all over the 
> place and you are not changing anything.

I knew it was going to have to be considered, as the afm scope traces on
  Picotech website mention that the jitter is from the natural pulsing
of the engine.

I had hoped that I could sort them out in the digital / digital ->
analog stage.

Any input would be more than welcome.

Thanks,
Ashley
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