Thank you, Tony!
Later,
Tom "Slick" North
96 Dodge Dakota 5.2L RC
71 Chevelle Malibu 350
71 Porsche 914/2.0L
----- Original Message -----
From: "TonyC" <acellan1@tampabay.rr.com>
To: <dakota-truck@buffnet.net>
Sent: Sunday, January 27, 2002 9:52 AM
Subject: Re: DML: msd fuel pump booster
> Nicely stated Tom.
> TonyC
>
> -----Original Message-----
> From: Tom Slick North <prodog@swbell.net>
> To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
> Date: Friday, January 25, 2002 11:11 PM
> Subject: Re: DML: msd fuel pump booster
>
>
> 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
>
>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:03:51 EDT