[Diy_efi] GM 1227783

[Scott Pearson]

Are you running a turbo? If not, why not upgrade to the 1228253? I have (3)
3800's running this ECM (2 N/A, one supercharged) and it works great.
Tunercat even has .tdf's for them now. Drop me a line off-list if you want
to try it. I've got a pile of 3800 parts and .bin files. What year of motor
are you running?

New style 3800 coil paks are 145236. I've never tried to interchange them,
but I've also heard that they have more spark. Anyone else care to comment
on this?

- Scott
----- Original Message -----
From: "Al Tobey" <tobeya at tobert.org>
To: "List for general do-it-yourself EFI talk" <diy_efi at diy-efi.org>
Sent: Wednesday, April 09, 2003 12:45 PM
Subject: [Diy_efi] GM 1227783


> Does anybody have the pinouts for the GM 1227783 ECM?  It's commonly
> used on the Series I 3800, which I have installed in my '89 GMC Jimmy.
> I'm currently making a new EFI harness for the truck.
>
> I have a 1227148 that I think may have been destroyed (extended
> submersion in water - can it still be good?).  This was the ECM that the
> harness was connected to.  I have two '783's, one of which I know is
> good.
>
> Also, can the GM DIS coil packs all be interchanged?  I have a newer
> style and a couple of the older style - I belive the newer style puts
> out more energy.  I also don't know the order of the pairs on the newer
> style - it doesn't have the cylinder numbers stamped on it like the old
> one does.
>
> old: |-o-o-o-| new: |oo-oo-oo|
>      |       |      |  |  |  |
>      |-o-o-o-|      |--------|
>
> Thanks for any info,
> -Al Tobey
> Unix Administrator
>
> 1989 GMC S-15 Jimmy
> GM Series I 3800 EFI
> --
> Al Tobey <tobeya at tobert.org>
> tobert.org
>
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://www.diy-efi.org/mailman/listinfo/diy_efi
>




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