GM ECM injector driver capacity

[Tom Sharpe]

My Edelbrock ProFlow  (Weber/Marelli?) is 4 channel w/ 2 injectors each. I think
it was created from a 4cyl unit. Yours is a 2x4 system now. Can't do any more
than smoke it but I don't think doubling the load will hurt anything. They take
a lot of current to open, you might be exceeding the design parms but I think
they are overbuilt.  Try it.  Tom

Jennifer and Brock Fraser wrote:

> Does anyone know what the injector driver capacity is on GM ECM's?  To be
> specific, I'm curious about the 165 ECM.  I see that on a multi-port V8
> application, all 8 injectors are batch-fired by 2 outputs.  Is it possible
> to attach 8 more injectors to these two outputs (series, parallel??) to fire
> 16 injectors simultaneously?  Info pertaining to the 730 ECM would be good
> as well...  The injectors would be high impedance (12-14 ohm) ones just like
> the stockers.
>
> If this isn't feasible, what would it take to make the GM driver(s) also
> trigger another external driver for the extra injectors?  Again, the desire
> is to fire the second batch of 8 at the same frequency and P.W. as the stock
> batch of 8.
>
> Thanks,
> Brock