[Diy_efi] new EFI controller

[Toyota Supra]

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

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




From: "Bevan Weiss" <kaizen__ at hotmail.com>
>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 15:58:34 +1300
>
>Couple questions...
> > the ability to controll additional injectors, based on a 3d map of 
>boost,
> > rpm and tps
>
>Why does boost/rpm/tps matter if you're just controlling additional
>injectors.
>btw, I'm thinking 8 injector outputs, for 8cylinder cars.
>6 cylinder cars can just leave 2 channels out, 12 cylinder cars can just
>leave two channels out and operate in batch mode.
>4 cylinders ofcourse would then get 8 injectors, ie 2 per cylinder.  Which
>would be perfect for injector staging, which would again be perfect for
>turbo'd applications.  Performance 4's are normally turbo'd /supercharged
>anyway.
>
>I'm thinking more along the lines of, calculate how much fuel is needed
>based on MAP/MAF (maybe both if it's advantageous).  Then inject that 
>amount
>of fuel.  I don't see why anything else is important.
>Fueling will be done based on:
>last cycle rpm, last cycle delta rpm, MAP/MAF, TPS, Temp(s)...
>
> > 10 general purpose outputs, with completely customizable 3d fields, 
>based
>on
> > boost, rpm and tps
>
>I'm still not sure why boost/rpm/tps is important for this...
>I'm hoping that several outputs will be left free for such use as shift
>lights etc, however these aren't required in the design and would only be
>added value.
>
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