Injector control

[Espen Hilde]

Hi guys!
Thinking loud again........
I think with oemstuff,gm...If we want a greater hp aria to cower ,is to use
2 ECM`s.Map based first ecm/stage and map on second stage.On the second
stage maybe it is possible to lower the pressure the
Map sensor sees.At 1.1bar the first ecm sees 1bar and the second see
.1bar.Maybe tbi on first stage and
tpi on second? Just to make it easy to convert an old engine?Can the two
ecm`s share all sensors ecept 
the map sensor?.........No, it is going to be more complicated.....the
second stage must begin at vacum....Maybe better with two maf`s. Second maf
comes in by trottle control, or by boost pressure if 
turbocharged.
What do ya think?
Espen
> 
> >>Hi Greg,
> >>A couple of thoughts regarding PW.
> >>1). The smaller you make the PW (resolution) the more Processing Power
> >>(MIPS) you need in an ECC or it forces the manufacturer to adds an
> >>automatic sequencer so as to keep the costs under control.
> >>2). Those of us who do performance modifications would like to add
> >>larger injectors.  With the low cost ECC's you wrestle with a large
> >>minimum PW which complicates idle and emmisions.
> >>Ron
> >I thought that was what I was trying to say!! Sure, you need more
> >processing power and a faster processor to get smaller pw resolution.
With
> >a bigger injector, you need a shorter pw (higher turndown ratio) to get
an
> >idle that works. so you go to p&h injectors, but if you do not have fine
> >enough pw resolution,  you still do not get decent idle tuning. Like
> >anything else, you get to spend more money to do it right!!
> >>> Regards, Greg
> 
> Wouldn't just using a lower fuel pressure work?.  So as to at least have
the
> injector fully on?.  Do a rising rate device, rather than a
> 1:1..   That one Bosch PWM FPR is beginning to sound better
> all the time.
> Bruce