MAF Sensors Placement
Mark Eidson
mark.eidson at tempe.vlsi.com
Thu Dec 12 15:53:36 GMT 1996
It seems that if you have capability and desire to play with you system that
MAP is a good choice becasue it is simpler/cheaaper to implement physically.
I have noticed the effect of acceleration and deceleration on mixture on my
system but don't have the capability to compensate for it. me
At 06:23 PM 12/11/96 -0800, you wrote:
>Mark Eidson wrote:
>>
>> Todd, with the problems you have described does MAP work better for these
>> applications? me
>
>
>Mark,
> Map does get rid of the back flow, turbulence, low speed resolution hot
>wire type problems, but doesn't get rid of the intake manifold resonance
>problem and certainly comes with its own share of problems. It needs
>barometric, temperature and acceleration compensation, and does not
>correct for engine changes over the long term. Small changes on the
>engine also affect the map sensor system whereas the hot wire works fine
>with camshaft, cylinder head, and exhaust changes improving the flow.
> I've personally had quite a few bad experiences and currently go to MAP
>on all our high performance systems and have been very happy with it.
>If I were an OEM, I would probably think hard towards using MAF, but
>they don't run 750hp through a 3.6l twin-turbo 911 either.
>
>Todd Knighton
>Protomotive Engineering
>
>
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