Injector Impedance how low can i go...

[goflo at pacbell.net]

Bruce Plecan wrote:

> Does anyone have any documentation to show where a Peak+Hold
> injector is "better" than a saturated?..  Yes, their operating times are
> fast (1-5msec.), but in anything other than SEFI, or very high rpm
> way bother?.  But, if doing a "normal" TPI or v-8 say limited to 7,500
> why bother?..  BTW, the S+H suggested times are 2-10msec.

No documentation - Conjectures:
Reducing the power dissipated as heat in the injector is probably a good
thing,
from the injectors point of view. Also, fuel is what's doing most of the
cooling - Heating the charge is probably not helping performance in most
cases.
I'm guessing that S&H closes sooner after removal of injector drive -
Less
energy in the mag field to dissipate. Should improve injector resolution
a bit.

Jack