[Diy_efi] Timing Calculations

[Daniel R. Nicoson]

On my 1994 Mustang my data logs show the advance varying between 9 degrees
and 35 degrees.  I would suggest this as one of your later refinements once
you have the system already running.  You may not need to go to that much
trouble.

I suspect the beauty of using timing is that it is all electronic, code, no
hardware involved.  But you would still have to have the proper air & fuel
there for the spark advance to manipulate.

Dan Nicoson


> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]On
> Behalf Of TheEthereal at gmx.net
> Sent: Wednesday, June 15, 2005 6:48 AM
> To: diy_efi at diy-efi.org
> Subject: Re: [Diy_efi] Timing Calculations
>
>
> Mitsubishi uses timing advance and reatrd to control idle speed.
> IIRC, they
> advance timing a bit if the engine runs slower than the set idle speed und
> retard it when it runs faster.
>
> > --- Urspr?ngliche Nachricht ---
> > Von: Mark Higgins <nospam at higginstribe.com>
> > An: diy_efi at diy-efi.org
> > Betreff: Re: [Diy_efi] Timing Calculations
> > Datum: Tue, 14 Jun 2005 21:25:22 -0400
> >
> > Yes, the processing power would ultimately say wether I have
> the ability
> > to do the calculations, but as far as I can see, after adding up the
> > time I have and the calculations I need to perform, I should have ample
> > processing power to do it.  The uC has the benefit of only supporting
> > one engine type, so I don't need to support more than 4 cylinders,
> > multiple trigger setups, multiple ignition and injector setups,
> > different idle modes, staged injection...bleh bleh bleh..
> >
> > I think I'll be leaving this processing out for now, simply because I
> > don't have the equipment to test exactly how it's effecting the timing
> > and how much of a benefit it is.
> >
> > On the subject of timing, I just heard about idle control using
> ignition
> > timing adjustment.  Can anymore point me to more information on this?
> > How well does it work?  I assume, it would just be a refinement to idle
> > air control and not a replacement for it.
> >
> > Mark Higgins
> >
> >
>
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