Get over it and move on Brian. Ray is correct and I agree with him
(wow...did I say that). You need to study and learn more on how the PCM
works with ALL of the sensor inputs before assuming that one small part of
the calculation will affect the outcome that much. General statements such
as " Your gas mileage will suffer noticeably..." are far from the truth and
seriously misinformed. Sure...if you cranked the temp down to 30 degrees in
90 degree weather on the IAT it will affect the mileage - but the
recommendation given only drops the temp by about 20 degrees and keeps the
IAT at a variable rate...not static.
The old manifold based IAT's (for the 1992 model Dakota in the original
post) run at 140-180 degrees...causing poor 'hot running' performance
causing less than desirable fuel economy. Move it either into the intake
stream (as Ray noted) or use the inline resistor and you will gain some of
the performance back. I also stated that on the '03+ models the IAT is
already in the intake stream (and gets about a 20 degree cooler reading
since it's not in the manifold anymore - better 'hot running' performance).
So...i'm done, move on.
- Bernd
-----Original Message-----
From: Brian [mailto:hskr@cox.net]
Sent: Friday, September 19, 2008 8:40 PM
To: dakota-truck@dakota-truck.net
Subject: DML: RE: RE: RE: RE: RE: RE: RE: RE: RE: Cold engine puts out more
hp/tq...
>From my personal experience it is, and I'll stick to it. There are two
people taking part in this debate, if you are going to tell one person to
"give it a rest" then you need to address everyone involved. All Bernd is
doing now is talking around in circles to avoid straight up admitting that
changing the IAT value does affect fuel mileage. And it is correct to say
that, because even using his words, it is PART OF the calculation and
changing any part affects the final value.
brian cropp
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Ray Block
Sent: Friday, September 19, 2008 7:54 PM
To: dakota-truck@dakota-truck.net
Subject: DML: RE: RE: RE: RE: RE: RE: RE: RE: Cold engine puts out more
hp/tq...
Brian, please give it a rest. I think this horse is dead enough. Accept
the fact your original statement concerning gas mileage vs. IAT sensor
placement is not correct for every combination and move on. Please....?
:-)
Ray
http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html]
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net [mailto:owner-dakota-
> truck@bent.twistedbits.net] On Behalf Of Brian
> Sent: Friday, September 19, 2008 8:15 PM
> To: dakota-truck@dakota-truck.net
> Subject: DML: RE: RE: RE: RE: RE: RE: RE: Cold engine puts out more
> hp/tq...
>
>
> I'm not arguing that there aren't other factors involved, but even by your
> equation, the IAT is part of it. You change ANY value in the equation and
> the end result changes too. And since that includes IAT, then, by posting
> that formula, you supported what I said that tricking the PCM into
> thinking
> the IAT is lower than it actually is, you are changing the PW and
> therefore
> amount of fuel used. Or are you going to try and argue that the formula
> doesn't work the way it's written??
>
> brian cropp
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