[Diy_efi] 1.3l TBI project

[John EFI Project]

would a 2.0 gm ecm work as a starting point better then the one out of a 1.8
?

John


On 1/25/06, Steve Ravet <Steve.Ravet at arm.com> wrote:
>
> John wrote:
>
> I have been reviewing the info available in this group making or
> adapting an TBI system from a GM 1.8l.
> I was wondering how much of the programming I would or might have to
> change(if any) to make this system work on a 1.3l motor. I have the
> computer, TBI, wiring and all the sensors from a 1985 chevy cavalier
> with a 4 speed. This project is going into a 1987 suzuki samurai.
>
> Tom wrote:
>
> According to my Mitchell On-Demand, an '85 4-cyl Cavalier should have a
> 01226867 ECM.  The factory spec'd different PROMs for auto, 4-, and
> 5-speed cars, as well as Cali and 49-state, but it appears that they all
> have the same brain.  Your factory distributor pickup should drive the
> EST ignition module with no problem.
>
> -----------------------------
>
> John, here is a WWW page that you should be familiar with.
>
> www.cruzers.com/~ludis
>
> click on C3 cross reference (C3 is the first generation GM computer,
> what the cavalier had)
>
> Under 1985 there is a 1.8L shown with computer 1226864, and a 2.0 shown
> with 1226867.  Don't know which the cavalier used but you should have
> one or the other.
>
> Google doesn't show me anything for tuning either, but I did find this
> in the gmecm archives:
>
> "I managed to get a 747 to run a single injector tbi 4cyl. by swapping
> netres out of a 1226867, tuning it is another matter, there are no other
> editor readable 4cyl. bins to compare to that I know of..If tunercat has
> a
> definition file for a 4cyl 730 Id go that route..As far as getting a 747
> to
> run 4 injectors Id have no clue..
> Dan"
>
> I would agree that finding sensors and getting the distributor to
> trigger the ECM are bigger concerns than tuning the difference between
> 1.8 and 1.3.  Also, the 1227165 and 1227730 were used in 4 cyl
> applications and are more modern that what you have, so there may be
> tuners available.  Try a google search and find what turns up.
>
> Finally, questions about GM are probably better asked on the gmecm list.
>
> --steve
>
>
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