I'm just curious, other brands use them to slightly change pressure
according to demand. High manifold vacuum = lower pressure, and
positive manifold pressure would raise fuel pressure.
The good thing about a return system is that it supplies cooler fuel
to the injectors, which pulls more heat out of the air...
Don't know if you would feel it in the seat of the pants though!
The bad thing is that it heats the tank and causes more emmisions.
> > Kyle
> > Your system has the return line, they did away with that
> > to keep the tank temps down, less emissions.
> > Does your fuel pressure regulator have a vacuum port?
>
> Hmmmm vacuum port.....not sure. How would I be looking for to verify if it
> does have a vacuum port? Just curious, but why are you asking about the
> port? What does it do? Good or bad?
> Kyle
> 93 Dakota 4x4 V6
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