i am assuming that this all applys to a 3.9 also ....
if so how would i go about increaing my fuel preasure
on my truck
Frank
94 3.4 sport
--- Bob Tom <tigers@bserv.com> wrote:
> At 07:17 PM 11/23/99 EST, you wrote:
>
> >In a message dated 11/23/99 5:46:15 PM Eastern
> Standard Time,
> >tigers@bserv.com writes:
> >> Whenever larger injectors are installed, the
> engine calibration must be
> >> changed to match the pulse width issued to the
> engine's needs. A 19 lb/hr
> >> injector size at 43.5 psi with a fuel pressure of
> 50 (close to ours) will
> >> have a flow capacity of 20.37 while a 24 lb/hr
> injector will have a flow
> >> capacity of 25.73.
>
> >HUH?!?!?!? -Austin
>
> What I didn't make very clear was that another way
> to increase a fuel
> injector's output is to increase the fuel pressure.
> The above example
> is what the flow capacities of the #19 and #24 would
> be in our Dakotas
> since our fuel pressure is close to 50. If we
> increase the fuel pressure
> to 55 then #19 will have a flow capacity of 21.36
> and #24 will have 26.98.
> While increasing fuel pressure is a simple way to
> richen the air/fuel ratio
> for wide-open-throttle power, it also increases
> part-throttle fuel a far
> greater percent than is necessary unless the
> computer is re-programmed.
>
> Bob. Southern Ontario, Canada.
> '97 Dakota CC Sport, FR, 5.2L, 3.55 SG, auto.
>
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