FMU... whats that?
----- Original Message -----
From: <bernd@texas.net>
To: <dakota-truck@buffnet.net>
Sent: Sunday, February 25, 2001 12:44 PM
Subject: Re: DML: Re: RE: Re: RE: recalibrated MAP sensors?
>
>
> Pretty much.
>
> I've tested this on a Dyno which is where I got the idea from. The MAP
was
> telling the PCM that it's under a light load and it is leaning out the
fuel.
> The FMU's that come with the S/C kits can put a bandaid on the problem,
but the
> solution is to fix the MAP signal first.
>
> - Bernd
>
> > Got ya, so it cuts out the fuel (oviously not all the way, like to a
idle
> > speed amount) and you run really lean and make no power right? Thats
when
> > you get that hesitation under part throtlle and more that you all (SC
daks)
> > are always talking about???
> >
> >
> > TJ
> > ----- Original Message -----
> > From: "Bernd D. Ratsch" <bernd@texas.net>
> > To: <dakota-truck@buffnet.net>
> > Sent: Sunday, February 25, 2001 5:38 PM
> > Subject: DML: RE: Re: RE: recalibrated MAP sensors?
> >
> >
> > >
> > > The MAP Sensor works on a linear scale.
> > >
> > > On initial Key ON/Engine OFF, it sets the baseline "0" reading
> > (atmospheric
> > > pressure). Going from idle to WOT varys since the load will vary.
> > Voltages
> > > are from 1 - 4.6v (on the average)...4.6v being 0"hg and 1.2v being
about
> > > 17-20"hg. (That's for simplicity's sake...readings will vary due to
> > load.)
> > >
> > > But, the when under boost (positive pressure / +1-2psi), the MAP reads
> > above
> > > 4.7v which is out of range from the initial "0" reading. This "freaks
> > out"
> > > the PCM and it registers 30.8"hg (light load/lean condition).
> > >
> > > - Bernd
> > >
> > > -----Original Message-----
> > > From: owner-dakota-truck@buffnet.net
> > > [mailto:owner-dakota-truck@buffnet.net]On Behalf Of TJ Goettner
> > > Sent: Sunday, February 25, 2001 5:51 PM
> > > To: dakota-truck@buffnet.net
> > > Subject: DML: Re: RE: recalibrated MAP sensors?
> > >
> > >
> > > OK, but what casues the Map sensor to read (what is it high boost or
> > vac??)
> > > what it does when it is actually under boost from a supercharger??
> > Anyway,
> > > how does it normally operate??
> > >
> > > TJ
> > > ----- Original Message -----
> > > From: "Bernd D. Ratsch" <bernd@texas.net>
> > > To: <dakota-truck@buffnet.net>
> > > Sent: Saturday, February 24, 2001 8:19 PM
> > > Subject: DML: RE: recalibrated MAP sensors?
> > >
> > >
> > > >
> > > > One problem...if you want to change out to a 2-BAR (or 3-BAR) MAP,
> > there's
> > > a
> > > > lot of extra code required in the PCM for that. From the emails I
had
> > > > received from three people (who program or have knowledge to
program)
> > > these
> > > > PCM's...it's too much of a pain to try to reverse-engineer them. No
one
> > > > wants to touch them.
> > > >
> > > > I looked into this when I first installed my S/C and started looking
at
> > > the
> > > > MAP signals.
> > > >
> > > > - Bernd
> > > >
> > > > -----Original Message-----
> > > > From: owner-dakota-truck@buffnet.net
> > > > [mailto:owner-dakota-truck@buffnet.net]On Behalf Of 1 BAD ARK DKTA .
> > > > Sent: Saturday, February 24, 2001 10:10 PM
> > > > To: dakota-truck@buffnet.net
> > > > Cc: m5sword@aol.com
> > > > Subject: DML: recalibrated MAP sensors?
> > > >
> > > >
> > > > Has anyone seen or used a MAP sensor from Electromotive?
> > > > They have 3 differnt sensors.....1 bar for normally asp
> > > > 2 bar for up to 15 p.s.i. boost
> > > > 3 bar for up to 30 p.s.i.
> > > > if not i will be calling next week to find out more.
> > > >
> > > >
> > > > Steve
> > > > 95 CC 5.2 SLT
> > > > MOPAR : "360-Heads" ,cast valve,and breather covers,R/T package
> > > > cam,underdrive pulleys,7.5mm sparkplug wires,igntion upgrade(made by
> > > > MSD),roller rocker package.
> > > > block bored 30 over, forged pistons,K&N 14x3.
> > > > series 40 Flowmaster 3" pipes(no cat)
> > > > smoothed & painted front bumper,painted grill,Sir Michael's rollpan
> > Le
> > > > Bra bed cover,16" Centerline Aztec.
> > > > 2 DML stickers!!
> > > > Best run: ( yes the track is only 1000ft)
> > > > 11.92 1000ft
> > > > 87.4 mph 1000ft
> > > >
> > > > _________________________________________________________________
> > > > Get your FREE download of MSN Explorer at http://explorer.msn.com
> > > >
> > > >
> > >
> > >
> > >
> >
> >
> >
>
>
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