MAP vs MAF Discussion

[Bruce Plecan]

> | MAF advantages
> | May have a slight MPG edge
> In a closed loop system at steady state (cruise), I would expect the O2
> feed back to make the same MPG for both systems.... look forward to
> hearing the rational behind this.

As far as mixture goes, true.  The "advantage" is in the timing resolution,
at low air flow rates.

> | MAF disadvantages
> error due to intake track reversion

ah good call

> | MAP disadvantages
> | No full time baro compensation
> easily changed... an implementation deficiency and not a disadvantage
> of using a MAP system.

As delvered by gm it is, not everyone can write the code change to correct
that

> Questions that remain....

> sensor specific limitations of
> accuracy

I'm not sure what you mean by this.

> time response

I thought lag time for sensor to stabilize covered that

> dependency on other factors such as ambient temperature

Doesn't error due to barometric conditions pretty much cover that?
Grumpy

> john gwynne


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