[Diy_efi] idle control strategy for SD systems w/o bypass air control?

[Kent Martin]

Yep just as good,
Kent.
----- Original Message -----
From: "Mike" <erazmus at iinet.net.au>
To: <diy_efi at diy-efi.org>
Sent: Wednesday, August 28, 2002 10:48 PM
Subject: Re: [Diy_efi] idle control strategy for SD systems w/o bypass air
control?


> Why not just adjust the deadstop on the butterfly instead of
> the extra plumbing for a bypass ?
>
> rgds
>
> Mike
>
>
> At 07:13 PM 26/8/2002 +1000, you wrote:
> >Well since this is a DIY EFI site might I suggest you use
> >an air bypass valve and control it. I have written some code
> >to control a stepper motor to do just that.
> >Using a PID loop, you can easily control a stepper motor
> >of an air bypass valve to get a nice stable RPM and easy
> >starting.
> >Kent.
> >
> >----- Original Message -----
> >From: "Jerry Wills" <jswills at attbi.com>
> >To: <diy_efi at diy-efi.org>
> >Sent: Sunday, August 25, 2002 12:10 PM
> >Subject: [Diy_efi] idle control strategy for SD systems w/o bypass air
> >control?
> >
> >
> >> A lot of DIY and I suspect some aftermarket EFI systems have no
> >> bypass air control. So how do you get a smooth idle at your
> >> chosen RPM? I know, adjust the injector timing, But on what
> >> do you base your decisions, and how fine grain do you need
> >> to be, and what do you decide?
> >>
> >> Two reasons I brought this up. One is purely self motivated,
> >> as I have a motorcycle engine with ND (uncrackable) injection,
> >> and I want to replace it without losing its great, always starts,
> >> rain or shine, and very stable idle.
> >> The other reason is that I sarched thru the archives and didn't
> >> come up with much, yet it seems like a problem all DIYers will
> >> face, and even those aftermarket folks as well.
> >>
> >> let the laughing begin,
> >>
> >>                         Jerry Wills
> >>
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> >>
> >>
> >
> >
> >
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