[Diy_efi] Early Mitsubishi EFI tuning

[Ben P]

a question about the board...

does it work anything like the silicon ship Digital Fuel Adjuster? 
http://autospeed.drive.com.au/cms/A_2418/article.html

that kit has 128 steps of adjustment, with each 'steo' being assigned a 
different voltage and having a different, pre-programmed, adjustment value. 
the adjustment is a 'voltage in + adjustment value = voltage out'. Is yours 
like that (but with frequency)?

thanks
Ben


>From: "Steven P. Donegan" <steve at donegan.org>
>Reply-To: diy_efi at diy-efi.org
>To: diy_efi at diy-efi.org
>Subject: Re: [Diy_efi] Early Mitsubishi EFI tuning
>Date: Sun, 08 Oct 2006 09:05:35 -0700
>
>Well, Interceptor is a generic term used by the Oz folks mostly -
>devices which intercept signals from car sensors, apply some logic to
>them and present the changed signals to the original car EMC. The one I
>designed is here: https://www.microvore.com/interceptor.jpg
>
>If the MAF does frequency output my board may well do the trick - it
>also has analog inputs but no analog outputs at present.
>
>On Sun, 2006-10-08 at 10:56 -0500, The AirHawk wrote:
> > > Ok another question about tuning an old manufacturers computer...
> > >
> > > The first of the fuel injection systems on the Mitsubishi Magna's were 
>attached to the FWD version
> > > of the ASTRON II engine, and I also believe that they had that awful 
>Karman-Vortex air-flow meter
> > > with a frequency output instead of a voltage.
> > >
> > > The first series of questions are:
> > >
> > > Can these computers be remapped? And if they can, how is it done?
> >
> > Try here:
> > http://dsm-ecu.com/
> > Or here:
> > http://groups.yahoo.com/group/dsm-ecu/
> >
> > If your Magna uses the OBDI-type eprom ECU, as used in '90-'94 DSMs 
>(Eagle Talon, Mitsubishi
> > Eclipse, Plymouth Laser)with the 4G63 engine, you'll probably find your 
>answer. If your ECU is
> > different, they might be able to point you in the correct direction. 
>There are a LOT of very
> > knowledgeable individuals on the yahoo-group message board.
> >
> > A word of warning: the yahoo-group will be most helpful in getting you 
>going, but they have little
> > tolerance for "Hey somebody send me a file!" or "Would somebody code 
>this so I can install this
> > widget on my car" kind of "requests". They'll help you, help yourself. 
>(not that I think you'll do
> > that, I just wanted to put out a general warning about it)
> >
> > > I have heard of various early computers using the EPROM chips, would 
>they use this? And if they
> > > do, does anyone possess a program that can convert the file from the 
>eprom dump into a magageable
> > > form (such as the TunerCat for GM computers)?
> >
> > There are a few programs tailored for the DSM-ECU on the yahoo-groups 
>site. You'll have to join for
> > more details.
> >
> > > And the last question is simple, has anyone heard of an interceptor 
>being successfully used on
> > > this computer?
> > >
> > > the reason behind asking all of this: A friend is building an early 
>RWD Lancer, with a
> > > turbocharged 2.6L Astron engine, and has an injected magna that he is 
>putting the turbo kit on
> > > first, just to make sure everything runs.
> >
> > Sorry, interceptor? Are you talking of an auxilliary fueling computer?
> >
> > > thanks
> > > Ben
> >
> > N.P.
> >
> > -Scott C.
> >
> >
> > _______________________________________________
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>--
>"Each new law makes only a single guarantee. It will create new
>criminals."-- John Tandervold
>
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