If anyone REALLY want to compare:
The factory reading from the Intake Manifold location is about 187 degrees.
Move it to the Fender and it averages at around 100-110 degrees. The cooler
the charge, the richer the mixture.
- Bernd
-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net]On Behalf Of Donny M Hayes
Sent: Tuesday, September 19, 2000 7:25 PM
To: dakota-truck@buffnet.net
Subject: Re: DML: RE: RE: IAT on 4.7?
Yeah, I thought about that too...but what got me
thinking is that over the last few months, when the
temp around here has been 100-105 and humidity around
70-80%...initial performance is awesome..but as soon
as the engine warms up it goes downhill. I could see
it being intake temp alone if starting out with even
80 degree air and normal humidity...but even when
trying to suck in air with the consistency of syrup it
runs better the first 5 minutes...I wish the Mopar
HIPO PCM was out....
--- "Barret, Matt" <MATT_BARRET@earthtech.com> wrote:
> Probably has to do with the fact that the intake is
> much cooler and thus the
> air charge is cooler.
> The same can be demonstrated on a dyno. If you let
> the engine cool down all
> the way then run it on the dyno you will see a
> higher HP output on the
> initial run, usually, than on subsequent runs
> because the intake starts to
> really heat up.
>
>
> __________________________________
> Matt--VA--Y2K-HEMI `00 Sport Plus RC
> 4.7L 5spd. 9 1/4 3.92 LSD, Homemade air intake,
> T-Bars, Spring clamps, Mobil 1,Hoosiers
> 3" Flowmaster cat-back,14.48 @ 92.40 MPH
> 209.9 RWHP/285 RWTQ
> /////////////////////////////////////////
>
>
> -----Original Message-----
> From: owner-dakota-truck@buffnet.net
> [mailto:owner-dakota-truck@buffnet.net]On Behalf Of
> Donny M Hayes
> Sent: Tuesday, September 19, 2000 2:23 PM
> To: dakota-truck@buffnet.net
> Subject: DML: IAT on 4.7?
>
>
> <<Just wondering, but does the 4.7 engine have an
> IAT
> <sensor? I have noticed that when my engine is
> <cold/cool it runs SO much better than when fully
> <warmed up...trying to come up with some way to
> trick
> <the pcm into thinking the engine isn't so hot....
>
> <any other tips tricks from the 4.7 guys/gals out
> <there?
> <So far I've added a Gibson exhaust, and a homemade
> K&N
> <FIPK.
>
> <thanks,
> <Donny M Hayes
>
>
> =====
> Donny M Hayes
> donny_m_hayes@yahoo.com
>
> __________________________________________________
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=====
Donny M Hayes
donny_m_hayes@yahoo.com
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