[Diy_efi] Early Mitsubishi EFI tuning

[Steven P. Donegan]

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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