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Nissan Figaro (FK10) Forum
Figaro Boost
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<blockquote data-quote="Ed" data-source="post: 151163" data-attributes="member: 4"><p>Yes. It has to be.</p><p></p><p>Air temp is exactly proportionate to the amount of energy the air molecules contain. If the air is hotter the molecules are more spread appart (air expands when hot - which we all know) so less moleules of air for a given volume will hit the hot wire, resulting in a smaller output voltage. We have to of course be talking absolute degrees Kelvin, so we have a change of about 273°C K (0~°C) to about 313K (40~°C) in the UK. On days with a lower barometric pressure you will also see less voltage, up a mountain etc. MAF can compensate where as a airtemp/MAP sensor base system with out a baro sensor can not.</p></blockquote><p></p>
[QUOTE="Ed, post: 151163, member: 4"] Yes. It has to be. Air temp is exactly proportionate to the amount of energy the air molecules contain. If the air is hotter the molecules are more spread appart (air expands when hot - which we all know) so less moleules of air for a given volume will hit the hot wire, resulting in a smaller output voltage. We have to of course be talking absolute degrees Kelvin, so we have a change of about 273°C K (0~°C) to about 313K (40~°C) in the UK. On days with a lower barometric pressure you will also see less voltage, up a mountain etc. MAF can compensate where as a airtemp/MAP sensor base system with out a baro sensor can not. [/QUOTE]
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