Re: IAT range

["Andrew K. Mattei" <amattei@mindspring.com>]

>On another list, we where talking about relocating the IAT on a colder area
>(on the Quad4, the sensor is directly on the manifold). I'Ve heard about
>this mod on F-bodies, I wanted to know if it was founded or not...


Well, one of our LT1_Edit mailing list members set up a little engine sim
(hooked to his PCM) and varied IAT only. In MAF mode (the mode our 94-97
LT1's run in 99.999% of the time), he found that varying IAT made no
difference. Turns out it's only used in speed density mode (when the MAF
fails). Makes sense, since the MAF meter knows exactly how much air is
moving through no matter what temperature, versus MAP which needs a
calculation based on temperature to know the density of the air.

Throw that in the FWIW pile. I've heard many "butt-o-meter" claims about the
IAT relocation mod, and some folks saying their cars ran better, but never
any documented proof (per Doc's last post), and I think the engine sim is a
great way to test a mod like this.

-Andrew

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