Holley 4 Brrl gm ecm

[nacelp]

Duh,
I can run them any way I want, I was doing some testing and letting other
folks know the results so they don't have to risk finding out by smoking an
ecm.
   Losing an injector on a 155 HP 350 is one thing, losing 2 on a 400 HP 350
is quite another.   It's fine to live at denial, but when something goes
wrong, I perfer that it doesn't instantly kill my motor.   I can't imagine
some one wanting to risk a S/C motor over injectors, course that's just me.
   Have you listened to *just* the injectors firing at 3,000 rpm?.  I have.
I can tell you what the difference in sound is like, I have put things on a
scope and looked at what's going.
   Just trying to save you and others some grief.
Grumpy
   I just caught Bashful rewiring the Cutlass taillights in series,  he was
thinking that was a good idea...


> The injectors have to be run in SERIES not parallel..
>
> Dan has been using his stock ecm with a 700cfm 4 bbl unit with 0 Problems
> wired in series..
>
> by the way my monster is alive :-)
> ----- Original Message -----
> From: "nacelp" <nacelp at bright.net>
> To: <diy_efi at diy-efi.org>
> Sent: Saturday, May 20, 2000 9:08 PM
> Subject: Re: Holley 4 Brrl gm ecm
>
>
> >
> > Don't bother
> > I was using a 749,
> > just tried 2 TBI injectors on one driver P+H, and killed the ecm.
> > No smoke, just stopped firing injectors, but the LED still flickers (in
> > parrarel with injectors),
> > any one gotta clue about that?
> > Grumpy
> >
> >
> > > Which ECM did you use?
> > > I tried different wiring setups with a 730 & Projection 900cfm TBI
> > > last year, and finally gave up.  The injectors could be made accurate
> > > and stable at idle, but 2k RPM was a bad thing..  It was either way
rich
> > > or way lean... The "real mechanical pulse widths" seemed to be very
> > > unstable.  I'll try it with a 749 as soon as I get my hands on another
> > >  big displacement engine.  My friend got impatient with my slow
> > > "work for beer" approach to his BBC camaro show piece,
> > > and paid someone with a dyno to put an electromotive system on it..
> > > Mike V
> > > > Just to satisfy my own mind,
> > > >  I wired up 2 TBI  P+H injectors in series, and fired up the ecm
> bench.
> > > >  Batch fire v-8
> > >
> > > ----- End of forwarded message from owner-diy_efi at diy-efi.org -----
> >
>
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