speed-density and TPS

[James Lawler]

Tom Cloud wrote:
>I've read a little highly technical info on fi -- but more on its practical
>application -- and can not remember ever hearing or reading where the use
>of throttle position wasn't important.  Heck, it's even used on MAF
>systems isn't it?  That's really puzzling to me .... why?  I understand
>what you quoted -- it just sounds more like a reference work than a design
>manual to me.

I can thing of a couple of things where the throttle position could be useful:

- WOT operation, most systems go into open loop at around 70% of throttle.
- The system can watch for sharp transitions (ie. stomping on the gas) and
react quicker (acceleration enrichment).
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