[Shane Buss]

There are other running the 4bbl unit wired like mine, and it works perfect,
but they are n/a.

i'm not trying to ask a specific question, more generally, how do you
account for boost on ANY engine?

Shane
----- Original Message -----
From: "nacelp" <nacelp at bright.net>
To: <diy_efi at diy-efi.org>
Sent: Saturday, May 20, 2000 9:46 AM
Subject: Re:


>
> > the ecm is the 746 ecm..
> > the injectors are wired in series. (front left * back right) are on one
> > "channel"  and (front right and back left) on the other.
> > They don't seem to care about the voltage drop.
>
> Is this from testing or just cause it seems to run that is must be OK?.
>
> > I have diacom, so i can get MAP readings etc... just curious what BPW
> would
> > be good to get going..
>
> I don't have that particular mask's editor, but do for the 747, which I'd
> imagine is rather close.  Any who the 350 BPW is set at 180, and a 454's
is
> set at 130.    Where are your's set currently?
>    12.5:1 AFR is the neighbor hood for N/A some S/C stuff goes richer, to
> use the fuel for cooling.
>    10:1 would prolly be rich limit.
>    Be prepared for lots of plug checks, if you don't want to melt this
down.
>    Have you read any of the tuning stuff.
> Grumpy
>    All the standard tuning warnings apply about you can melt a motor down
> easily with tuning errors, etc.
> >
> > Shane
> > ----- Original Message -----
> > From: <ECMnut at aol.com>
> > To: <diy_efi at diy-efi.org>
> > Sent: Saturday, May 20, 2000 8:43 AM
> > Subject: Re:
> >
> >
> > > Hi Shane,
> > > you didn't mention which ECM yoy're using, but larger injectors
> > > and a 2 bar setup might be needed.   OR.... a second computer, like a
> 749
> > > with 2nd group of injectors which lie dormant until boost is present,
> > > then you can accurately meter the additional fuel, up to 15 psi..
> > > You would need to obtain a tach & MAP signal at the very least..
> > > Mike V
> > >
> > > > Hey guys anyone know how to calculate the base pulse width when
> running
> > > >  boost?
> > > >
> > > >  Obviously the problem is that the VE tables max out at 100%, but
with
> a
> > > >  blown motor you are over 100% efficient.
> > > >
> > > >  I thought about using a forumla i had and just using a A/F ratio of
> > like
> > > 8..
> > > >  Does anyone know the limit of A/F ratio?
> > > >
> > > >  I use tunercat for tuning, and my car is a 92 firebird 355 TBI with
> the
> > > 4bbl
> > > >  holley 700cfm unit. I run a roots style blower with 6psi of boost.
> > > >
> > > >  thanks,
> > > >  Shane
> >
>
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> >
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