Out of the three basic types of EFI systems, which are;
1. Throttle body only. (kind of like an electronically controlled
Carburetor. )
2. Rail injection, batch fired ( has fuel rails with an injector above
every intake valve).
This one is not sequentially fired, but fires some combination of injectors
at the same time)
3. Multi point injection. ( injectors mounted in various places, but ahead
of every intake valve for sure) Could have fuel rails, or not. True fuel
injection, individual cylinders fired separately. Does a great job of fuel
distribution, ( except when an injector goes bad, then you have one lean
cylinder amongst the rest.) This one will cook individual cylinders and
leave the rest unscathed.
4. There is one more, Direct cylinder injection. Not in use in our
applications. From the simple, to the complex. All have good and bad points.
Jim Hupy
Salem, Oregon
On Thu, Jun 18, 2020, 9:27 AM Keith V via Gmclist
wrote:
> I doubt I'm smarter than most, but I will call

> I'm just starting to collect parts.
> I'm kinda weird and like things my way. After a few tries it ends up like
> everyone elses LOL
> ________________________________
> From: Gmclist on behalf of Jim Kanomata
> via Gmclist
> Sent: Wednesday, June 17, 2020 5:17 PM
> To: gmclist
> Cc: Jim Kanomata
> Subject: Re: [GMCnet] Howel EFI
>
> You must load it with a
program.we have it as we sell the EBL for GMC MH
> 493/455
> I can supply ready to go for $430
> Your call if your smarter than most.
>
> On Wed, Jun 17, 2020 at 2:58 PM Keith V via Gmclist <
> gmclist>
>
> > EBL is $400 if you send them an ECU, but they will sell you already with
> > RBL for $450, seems like a deal to me.
> > Looking at the little bit of the board they show it's got some big chips
> > on it. I'd bet theres a processor, memory and a whole lotta magic smoke
> > ________________________________
> > From: Gmclist on behalf of Ken
> > Henderson via Gmclist
> > Sent: Wednesday, June 17, 2020 4:48 PM
> > To: GMC Mail List
> > Cc: Ken Henderson ; Jon Roche <
> lqqkatjon
> > >
> > Subject: Re: [GMCnet] Howel EFI
> >
> > In the "good price" calculation, one should remember the $350 for the EBL
> > and the cost of adding the additional wiring and sensors and computer
> > controlled distributor.
> >
> > Ken H.
> >
> >
> > On Wed, Jun 17, 2020 at 10:45 AM Jon Roche via Gmclist <
> >
> > > I thought the howell system is basically a base system of the EBL.
> you
> > > can swap out the EBL and had the harness wires for the other features
> of
> > the
> > > EBL?
> > >
> > > don't they mainly use a holly TBI unit, and it is just a harness that
> > > would have the different add-ons such as knock sensor, and distributor
> > > control
> > > added in?
> > >
> > > so if he can get a howell system at a good price, he can jump up to an
> > > ebl system from there fairly easy? I know keith has the ability to add
> > > wires
> > > to a harness- I have seen his air system he makes as well as his rat
> > rod.
> > >
> > >
> > >
> > >
> > > --
> > > Jon Roche
> > > 75 palm beach
> > > EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
> > > St. Cloud, MN
> > >
http://lqqkatjon.blogspot.com/
> > >
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> --
> Jim Kanomata
> Applied/GMC, Newark,CA
> jimk
>
http://www.gmcrvparts.com
> 1-800-752-7502
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