C/L WB/WOT OEM ECUs...

[Garfield Willis]

On Fri, 7 Apr 2000 14:20:28 -0400, "nacelp" <nacelp at bright.net> wrote:

>I've never seen that.  Not saying it doesn't exist, just none of the popular
>gm stuff uses it.
>
>> (1) throttle rateOchange
>> (2) throttle pos (the actual position itself)
>> (3) MAP rateOchange
>
>Only option 2, seems to be applicable, again gm wise.

OK, great, this is good news. The above case is real, tho. The FelPro
system has all three of the above.

>Well, in general, there are a number of those, ie time after restart, CTS,
>lots of defaults from sensor failures, etc..  I wouldn't want to disable all
>of those features, or you get a very dumb ecm, and that's what we're trying
>to avoid in large part.

Right, I agree; we just have to cover enough of them so we can keep C/L
during the 'important' times. Let the ECU still go to O/L during all
those "special" circumstances and cases; that's very desirable.

>I think your overthinking this, to a slight degree.

Yup, I was hoping so; I was trying to err on the side of pessimism, and
see if it got better from there. Sounds like it indeed does. Great.

>If we don't allow a PE
>mode by clipping the TPS value, there will be no PE.

Understood. This seems much more tractable since it sounds like for the
GM ECMs, this is the only "hole" to plug. Sounds good. Just wish there
was a flag/column in some table for the TPS, that could be set to
disable PE without intercepting the sensor itself. But I ain't
complainin; this sounds doable so far.

>Yes, for the hac'd ecms.

As you well know, I'm hoping just such a scheme can be tried
successfully *especially* on the GM ECMs, given their wide availability,
their relative ease of use, and knowledge base already out there. Can't
wait to get someOdem lil EGOR-modules out there and have a go at it.

I know there are some others that have thots on this subject; come on,
speak up, help us sort thru this and maybe raise the confidence level
even more, eh? Don't be shy. :)  Walt, you listenin?

Gar


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