Relocating IAT sensor?

[Mike]

R(gas constant)air  =  53.36 ft-lbf /lbm-degR

Swayze
Mswayze at Truswood.com
Kswayze at Bellsouth.net
----- Original Message -----
From: "Mike" <kswayze at bellsouth.net>
To: <gmecm at diy-efi.org>
Sent: Tuesday, October 24, 2000 11:01 PM
Subject: Re: Relocating IAT sensor?


> this is where the spreadsheets on incoming are handy
> try miscmath.xls from the incoming dir. also
> http://www.bestintexas.com/cars/calculate/index.html
>
> byE
> Mike
> Swayze
> Mswayze at Truswood.com
> Kswayze at Bellsouth.net
> ----- Original Message -----
> From: "rr" <RRauscher at nni.com>
> To: <gmecm at diy-efi.org>
> Sent: Tuesday, October 24, 2000 9:40 PM
> Subject: Re: Relocating IAT sensor?
>
>
> >
> > OK, I found some info. Didn't think I'd find it in this book, but it's
> > there: Air is a mechanical mixture composed of 78 percent, by
> > volume, of nitrogen, 21 percent of oxygen, and 1 percent of argon.
> >
> > Now the good stuff. . .
> >
> > At atmospheric pressure:
> >
> > Temp F:    Vol. of 1lb. in ft^3:      Density (lb/ft^3)
> > 0                 11.57                           0.0864
> > 32               12.39                           0.0807
> > 72               13.39                           0.0747
> > 102             14.14                           0.0707
> >
> > (Machinery's Handbook, 1976, p. 2306).
> >
> > Can anybody else do something with these numbers. How much
> > of a change in fuel would be required?
> >
> > Thanks,
> >
> > BobR.
> >
> > Bruce Plecan wrote:
> >
> > > Why thank you!
> > >
> > > 02B0  for the 8D
> > > 0247  for the 6E
> > > are enable MAT temps for EGR.
> > >
> > > Funny how things only make sense one ya read them.
> > > Bruce
> > >    Still looking for more sense
> > >
> > > > I think the problem may be that we are confusing MAT with IAT. The
88h
> > > mask
> > > > for the '730 (v6), uses an IAT in the air cleaner. There are a bunch
> of
> > > tables
> > > > that
> > > > use it. I'm still deciphering the code, so I can't get real specific
.
> The
> > > IAT is
> > > > read
> > > > 10 times a second.
> > > >
> > > > Ok, took a quick look at anht. Loop segment 10 reads the mat sensor
10
> > > times
> > > > a second. Saves the result in L013C & L0061 @ D74C. Looks like the
egr
> > > gets
> > > > disabled when the MAT is less than 30c. Hmm, maybe thats what folks
> are
> > > > noticing when they relocate the sensor. . . (see D812).
> > > >
> > > > I guess what it comes down too, is how much does air density change
> with
> > > > temperature? That is what needs to be compensated for.
> > > >
> > > > BobR.
> > > >
> > > > Dave Zug wrote:
> > > >
> > > > > I'm glad this has come up again.. I never really got a responce
> before
> > > to
> > > > > this:
> > > > >
> > > > > I have not seen where IAT affects ANAYTHING in the '727 / '730. I
> see it
> > > > > written to ONCE and never READ or used unless I'm missing an
indexed
> > > > > indirect bitwise X or something.
> > > > >
> > > > > ----- Original Message -----
> > > > > From: <OneSS2NV at aol.com>
> > > > > To: <gmecm at diy-efi.org>
> > > > > Sent: Tuesday, October 24, 2000 7:10 AM
> > > > > Subject: Relocating IAT sensor?
> > > > >
> > > > > > Hello all,
> > > > > >    Since I'm going to have the top of the plenum off my TPI to
> install
> > > the
> > > > > > adjustable fuel pressure regulator, would it be worth it for me
to
> > > > > relocate
> > > > > > the IAT sensor and plug the port on the bottom with a pipe plug?
> I
> > > know
> > > > > my
> > > > > > IAT sensor is out in front on my Impala, and same thing with my
> > > friend's
> > > > > > Turbo Regal.  What effects, positive or negative, will it have?
> > > > > >
> > > > > >     Thanks in advance,
> > > > > >        Steve Ragusa - AKA the "New Guy"
> > > > > >         North Jersey
> > > > > >       '85 Monte SS with '87 305 TPI MAF harness
> > > > > >         '96 Impala SS
> > > >
> >
>
> --------------------------------------------------------------------------
> --
> > To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> > in the body of a message (not the subject) to
majordomo at lists.diy-efi.org
> >
> >
>
> --------------------------------------------------------------------------
--
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
>

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org