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Re: IAT range
You're right Barry, the OEM is set to be a little richer than it needs to be
(lean=detonation). It was mainly to play with the timing retard. I always
hated where GM put that darn IAT, so close to the intake ports.
Guys, I do realise that this is a cheap-ass, unproven mod, but hey, I'm no
ECM wiz and I'm here to learn about that stuff. I haven't tried this on my
car, I doubted the result, but never hurt to ask.
___________________________
Marc Ethier
___________________________
91 GTZ Q4
88 Escort EXP
>
> In Mark's defense, I'm sure he was most likely asking about the Quad4 in
> his Beretta which does rely on speed density as its primary measure of
> intake ability, having no MAF sensor. However, I have to agree with the
> general statement that the IAT relocation mod shouldn't make a darn bit
> of difference, or if anything, it should cause more problems than its
> worth. If I understand correctly, the IAT relocation mod is supposed to
> place the IAT in a cooler location, thus tricking the ECM into richening
> the a/f mixture. But, is this what we really want? I was under the
> impression that, from the factory, most a/f mixtures are more towards
> the rich side already to keep the cat cool and reduce the formation of
> NOx, especially since the Quad4 does not utilize any measure of EGR.
>
> ========================================================================
> D. Barry Stubbs http://surf.to/z24man
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