Running 8 low impedence injectors on GM ECM using an auxilliary injector driver?

[Walter Sherwin]

The Accel VIC product is made for exactly what you describe.  Two input
channels controlling two banks of four low impedance injectors each.  I like
the added feature of adjustable pulse trim per injector, in spite of the
fact that the control architecture remains batch with a VIC.  I think the
VIC is an excellent product and would not hesitate using external drivers
(custom or commercial) to control low impedance (or odd gangs) of injectors
that are to be triggered by OE style boxes not originally intended for same.
This holds true for port fuel or TBI fuel.  Makes good sense as: 1)the
injectors each get the current that they were intended for, if the external
box is done "right", and  2)the ECM/PCM/ECU is relegated to handling nothing
more than low current level triggering duties, which won't hurt it's life
cycle in the least.  Win/Win situation, if you have to use an OE box that
does not encompass your injector count/type.  I use a number of LM1949 based
"boxes" in what I play with, and have not yet had any problems.

Walt.




> Has anyone ever tried running 8 low impedance injectors with an auxiliary
> injector driver that is triggered by a GM ECM (like a 1990 F-body ECM)?
> Accel/DFI makes a low impedance injector driver/controller that allows EFI
> systems for high impedance injectors to trigger low impudence injectors.
We
> have used this system on some of the Accel/DFI applications (before they
> came out with an ECM that could control low impedance injectors directly).
> Anyone see any problems controlling this device from a GM factory ECM?
Would
> you use one to control all 8 or two, one to control each bank of 4
> injectors?
>
>
> Jason


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