165 ECM question, "single fire" vs "double fire"

[Ludis Langens]

Kevin Crain wrote:
> 
> If I'm interpreting this correctly, there are two ground paths but only one
> driver pulsing both banks simultaneously.

Correct.

> It was my understanding that the
> ECM fires the injectors twice per revolution, however.  Can't find anything
> in the manual on this, tho.

Once per revolution - that's twice per induction event.  At very low
injector pulse widths, the ECM software may skip every other injection
time (and double the time of the remaining pulse).  The result is one
pulse of the injector per two crank revolutions.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
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