Yes. That is what my research indicates also. I think we have been reading
the same material.
I'm waiting for more info about the Hyperspeed before I make my decsion.
May go with supplemental injector system to keep from rich idle to pass
smog.
>From: Tom Slick North <prodog@swbell.net>
>Reply-To: dakota-truck@buffnet.net
>To: dakota-truck@buffnet.net
>Subject: Re: DML: msd fuel pump booster
>Date: Fri, 25 Jan 2002 22:08:13 -0600
>
>Wrong... the fuel injectors flow a certain amount at a certain
>pressure....increase the pressure, and you increase the amount of fuel
>going
>through the injector... remember, injector flow rate is calculated at a
>specified fuel pressure...which should be between 44.2-54.2psi on the
>Dakotas (according to the factory service manual)
>
>Most OE systems maintain a fuel pressure of between 36 and 43.5 psi over
>the
>intake manifold pressure. Fuel pressure can be raised to increase the rate
>of fuel flow but this should not exceed 60 psi in most cases. It takes 4
>times the fuel pressure to double fuel flow. Raising the pressure to
>extreme
>levels is very hard on the pump and can lead to leaks or failures in the
>plumbing and injectors themselves.
>
>The biggest problem with going with bigger injectors is not fuel
>pressure...the factory fuel pump can handle over 40lb injectors @ 44psi
>with
>no problem....The problem is the PCM adjusting for the larger injectors...
>an overly rich idle is fairly common with larger injectors... this is
>where
>the Hyperspeed module comes in.... it adjusts the fuel enrichment...if the
>engine is running too lean, it tells the pcm to richen the mixture...it
>will
>also lean out the mixture if it is too rich...
>
>To me the best way to go would be larger injectors and the Hyperspeed
>module....rather than a boost-a-pump, or FMU...
>
>But, that's just my opinion...
>
>Later,
>Tom "Slick" North
>96 Dodge Dakota 5.2L RC
>71 Chevelle Malibu 350
>71 Porsche 914/2.0L
>
>
>----- Original Message -----
>From: "Andy Levy" <andylevy@yahoo.com>
>To: <dakota-truck-moderator@bent.twistedbits.net>
>Sent: Friday, January 25, 2002 8:24 PM
>Subject: Re: DML: msd fuel pump booster
>
>
> > No matter how big the pump, the injectors will keep pumping the same
>amount
> > of fuel into the cylinder. Partly because of their own flow rate, and
>partly
> > because of the regulator between the pump and injectors.
> >
> > Chad Evans wrote:
> >
> > > would the msd fuel pump booster be better than getting bigger
>injectors
>?
> > > it is suppposed to be adjustable voltage to your fuel pump.
> > > it's on page 90 of the new jegs catalog.
> > >
> > > hemidak@msn.com
> > >
> > > _________________________________________________________________
> > > Join the world's largest e-mail service with MSN Hotmail.
> > > http://www.hotmail.com
> >
> > --
> > -andy
> > andylevy@yahoo.com
> > Maintainer, DML FAQ - http://www.dakota-truck.net/faq/
> > http://home.twcny.rr.com/andylevy/dakota/
> > '99 CC 4x4 318 auto
> >
> >
>
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