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

[Mike]

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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