Injector control

[Bruce Plecan]

-----Original Message-----
From: Greg Hermann <bearbvd at sni.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Wednesday, November 25, 1998 9:52 AM
Subject: Re: Injector control


>>bearbvd at sni.net (Greg Hermann) wrote:
>>> First--has anybody figured out how small an incremental adjustment to
>>> injector pulse width time the OEM ecm's are capable of making (GM,
Bosch,
>>> etc.???)?? If so, is it posted anywhere??
>>
>>GM is 1/65536 or 1/65517 of a second.  So, about 15 microseconds.
>>
>Thanks, Ludis. To me, this means that, if trying to use a GM unit in a real
>hipo application, NO WONDER it is tough to get a particularly good idle!!

Is it that, or MAP/MAF filtering at idle, that is the problem?.
Or is it a combination of idle speed/MAP/MAF flucuations causing
the ecm to glance at a near table that at fault?.
By the way, what would you call good enough resolution?.
Bruce
>
>Regards, Greg
>
>