MAF Sesnor Placement

[JohnRizz]

on a turbo car, isn't the MAF sensor supposed to be before the turbo (air filter side), not after the turbo (throttle body side)? It was to my understanding that MAF sensors do not read boosted air well.

 

[pnishr]

It is perfectly fine to have the MAF after the turbo. It's called "blow-through." depending on the MAF (whether or not it takes air temperature into consideration) will determine how well it works post-turbo. For metering purposes though, it's better to be after the turbo, as it measures the air ACTUALLY making it to the engine. It won't measure what is being released by the BOV.