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gmiateffect [2009/09/11 06:17]
twdorris
gmiateffect [2024/03/15 11:16] (current)
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 One shows the engine running with air temperature in the 65-70F range while the other shows air temperature in the 160-170F range! ​ The air temperature sensor on this car is located only inches away from the GM MAS. One shows the engine running with air temperature in the 65-70F range while the other shows air temperature in the 160-170F range! ​ The air temperature sensor on this car is located only inches away from the GM MAS.
  
-Despite the large swing in air temperature,​ the GM MAS reading was nearly identical between the two logs.  Fuel trim variation was less than 1%.+Despite the large swing in air temperature,​ the GM MAS reading was nearly identical between the two logs.  Fuel trim variation was less than 1% between them.
  
-[[http://​www.ecmtuning.com/​images/​forums/​gmmafiatdata/​gmmaf-iat-cold-clip.elg|IAT near 65F]] \\ +[[https://​www.ecmtuning.com/​images/​forums/​gmmafiatdata/​gmmaf-iat-cold-clip.elg|IAT near 65F]] \\ 
-[[http://​www.ecmtuning.com/​images/​forums/​gmmafiatdata/​gmmaf-iat-hot-clip.elg|IAT near 165F]]+[[https://​www.ecmtuning.com/​images/​forums/​gmmafiatdata/​gmmaf-iat-hot-clip.elg|IAT near 165F]]
  
 Hopefully this provides some reassurance to folks that the GM MAF sensors really do not require and would not benefit from additional IAT compensation. ​ In fact, since the GM MAS signal is already accurate as air temperature changes (see datalogs), providing IAT compensation would actually mess the signal up. Hopefully this provides some reassurance to folks that the GM MAF sensors really do not require and would not benefit from additional IAT compensation. ​ In fact, since the GM MAS signal is already accurate as air temperature changes (see datalogs), providing IAT compensation would actually mess the signal up.
gmiateffect.1252664231.txt.gz · Last modified: 2009/09/11 06:17 by twdorris