DFI, Batch Fire, and other myths

[John Andrianakis]

Bruce Plecan wrote:
> 
> Snip
> , or is there still a low-battery injector
> >pulse width correction?
> 
> yes, in the few gm ecms, I've seen there has always been a v
> correction table.
> Snip
> 
> Would anyone happen to know, an easy way to lie to the ecm to
> actually test this?.  Would something like a 1.0 ohm 10 watt
> resistor in series with the key power on or does the memory
> wire have to drop also?.
> On diacom they show a fuel pump voltage, is that the same as
> what is used on the voltage correction table?.
> Cheers
> Bruce

Not a very good idea but you could disconnect the altenator and watch as
bettery voltage went slowly downward. 
I havent even seen a gm ecu so I cant tell about the rest.
John Andrianakis.