Mass airflow sensors.

[nacelp]

How about adding a MAP sensor, and looking for a sudden change in that?.
Grumpy


> Hi,
> I'm also working on converting my AFM to MAF but I've ran into a
> couple problems that I don't see mentioned here.  The response
> time of the AFM to changes in air flow is almost instantaneous.
> However, the MAF (GM hot film sensor) requires about 200ms to
> fully react to a change in flow.  If I map the MAF signal to an
> equivalent AFM voltage, the car runs great, as long as I don't stab
> the gas.  If I do, I basically go very lean for 200ms resulting in a
> very nasty head jerking event.  My thought was to use the
> derivative of the TPS signal to compensate during the 200ms.
> Unfortunately, my car doesn't have a TPS.  If there any way to
> accomplish what I want or do I have to add a TPS?
>
> Any thoughts?  BTW the car is an 88 BMW 535i if that helps.
>
> Thanks.
>
> Brian Franchuk
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