[Diy_efi] new EFI controller

[Toyota Supra]

stand alones are a pain in the ass, and its some people choice to avoid 
such, especially on a daily driver, other people like it, some don't.

what is the bit processing power of the 565/566 processor? from a quick 
google search, i have found it to be 16 bit, is that correct?

i can compare it to the processor of my ecu, if you can offer that info, 
thats about all the is widely known, as for specs on my factory ecu, i'm not 
really sure of its processor speed, but i can compare that if you like.

anyways, i haven't heard anything on the GPO's or the cost ... let me know

-j






From: bearbvd at mindspring.com (Greg Hermann)
>Reply-To: List for general do-it-yourself EFI talk <diy_efi at diy-efi.org>
>To: List for general do-it-yourself EFI talk <diy_efi at diy-efi.org>
>Subject: Re: [Diy_efi] new EFI controller
>Date: Mon, 10 Mar 2003 13:57:29 -0700
>
>At 2:59 PM 3/10/03, Toyota Supra wrote:
> >the problem with the sizing of the injector theory, and the duty cycle
> >theory, is that it sounds like you are assuming that the person would be
> >using your setup as a stand alone, instead of a piggy back, which would 
>not
> >be the case in my case.
> >
> >with the GPO's, i think my suggestions still stand as what would be the
> >best, to have it being able to be used for as many possibilities, as
> >possible. the more applications it can suit, the more units you could 
>sell!
>
>If you are building an ecu using a 565/566 processor, why in the name of
>heaven use it as anything BUT a stand alone ?? It would only have , maybe,
>100---1000 times the processing power of the oem ecu !!
>
>This kind of an ecu is NOT for those afraid to re-do a harness !!
>
>Greg
> >
> >any thoughts on approximate cost? could you build a special unit to
> >accomodate my setup?
> >
> >-j
> >
> >
> >
> >
> >
> >
> >
> >>From: bearbvd at mindspring.com (Greg Hermann)
> >>Reply-To: List for general do-it-yourself EFI talk <diy_efi at diy-efi.org>
> >>To: List for general do-it-yourself EFI talk <diy_efi at diy-efi.org>
> >>Subject: Re: [Diy_efi] new EFI controller
> >>Date: Mon, 10 Mar 2003 11:33:53 -0700
> >>
> >>At 11:53 AM 3/10/03, Toyota Supra wrote:
> >> >although tps is not super crucial in the additional injection, the rpm
> >>(as
> >> >well as boost) would be ... reason being, is that if i want the 
>injectors
> >>to
> >> >turn on at a certain rpm, or boost, i can set either, or set values 
>based
> >>on
> >> >either, since it will make 15 pounds of boost at 4500rpms in 2nd gear,
> >>but
> >> >15 pounds at 3300 in 5th gear
> >>
> >>You can accomplish essentially the SAME thing by turning on the 
>secondary
> >>injectors based on duty cycle of the primaries, or based on some 
>internally
> >>calculated engine load calculation. Far simpler to do it either of these
> >>ways in the software than to do a separate calculation.
> >>
> >>The _REALLY_  nice_ arrangement is to size the primary injectors at 
>about
> >>1/2 the flow capacity of the secondaries. (In other words, size the
> >>injectors so as to get 1/3 of full power fuel flow from the primaries 
>and
> >>2/3 from the secondaries.) Turn the secondaries ON and the primaries OFF
> >>when you get to about 75 or 80% duty cycle on the primaries, then turn 
>the
> >>primaries back ON (leaving the secondaries ON) when you get up to enough
> >>load to reach 75 or 80% duty cycle on the secondaries. You will get 
>_MUCH_
> >>more accurate fuel metering this way, from idle through cruise all the 
>way
> >>to the top end.
> >>
> >>Greg
> >> >
> >> >as for the general purpose outputs, that is to give the user the 
>ultimate
> >>in
> >> >adjustability for miscellaneous items, the tps would be important 
>there
> >> >
> >> >let me know what you think, any guesses on approximate cost?
> >> >
> >> >-j


[truncated]

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