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Re: Injector Duty cycle calculations
timsiford@hushmail.com wrote:
> Yes - this is exactly what I am thinking too. Let me ask you a quick
> question: When the 730ECM reports injector on-time (pulse width), is
> this the amount of time the injector is on for ONE off-on-off session
> or the amount of time spend in a double-batch fire (off-on-off-on-off)
> session?
The time for one batch fire injection. off-on-off
> Its just hard
> to believe that Diacom is reporting 8.3-8.5ms at 6000+ RPMs. That would
> mean that my injectors are actually on for 16.5 to 17.0ms per 4 strokes.
> That's A LOT of fuel. Does that sound correct? Furthermore, when you
> consider the fact that my 24lb injectors are operating like 28lb injectors
> (due to the greater Fuel pressure) it makes 17.0ms of on-time seem like
> a A LOT for a naturally aspirated 350 for one 4-stroke rotation. Any thoughts
> on this? What does your EFI experience say?
That PW suggests about 400 HP or so. What times are you turning?
> When did GM switch to SEFI?
Wide open question! Do you mean when did the Camaros switch to SEFI?
That happened in the LT-1s in 1994, if I remember it correctly.
Scot Sealander
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