Why do we need DFCO?
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From: Zurich - Switzerland
Why do we need DFCO? Is it really necessary to have a decel fuel cut off?
What if I eleminate it and let the injectors pulse all the time?
A local tuner told me that it's only a pollution issue. Actually it's better to have fuel all the time. This will cool the engine and cause a richer AFR as soon as you go back on the gas pedal - apparently a good thing (???)
What is your opinion?
What if I eleminate it and let the injectors pulse all the time?
A local tuner told me that it's only a pollution issue. Actually it's better to have fuel all the time. This will cool the engine and cause a richer AFR as soon as you go back on the gas pedal - apparently a good thing (???)
What is your opinion?
Originally Posted by tici
Is it really necessary to have a decel fuel cut off?
What if I eleminate it and let the injectors pulse all the time?
A local tuner told me that it's only a pollution issue. Actually it's better to have fuel all the time. This will cool the engine and cause a richer AFR as soon as you go back on the gas pedal - apparently a good thing (???)
What is your opinion?
What if I eleminate it and let the injectors pulse all the time?
A local tuner told me that it's only a pollution issue. Actually it's better to have fuel all the time. This will cool the engine and cause a richer AFR as soon as you go back on the gas pedal - apparently a good thing (???)
What is your opinion?
i've seen few cars with 2-3mpg increase because of enabled dfco.
however, i dont believe in the cooling effect, we're talking about few grams a second max of fuel cooling few hundred pounds of aluminium block that's heatsoaked.
however, i dont believe in the cooling effect, we're talking about few grams a second max of fuel cooling few hundred pounds of aluminium block that's heatsoaked.
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From: Zurich - Switzerland
Originally Posted by TAQuickness
I think it has everything to do with emmisions and economy. I set my DFCO fairly agressive and my average mileage went up 3mpg.
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Stock for stock, I'd say they get about the same. If you were to optimize the tune, I'd give it to the Vette. Corvettes have better aerodynamic traits and are lighter than an Fbody.
Best way to see if DFCO is active is to log your injector pulse widths. If they are less than 1ms then DFCO is definately active. When DFCO is active, you will see a lean condition.
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From: Omaha, NE
Originally Posted by tici
With carburated engines there is no DFCO. Is that a disadvance?