Contour Enthusiasts Group Archives Forums Modifications Forced Induction Converted to a blow through setup

Yes. Heat will mess up the mafs ability to measure. Something about the way it uses heat in its measuring method doesn't work as well when it is already very hot air.

The whole point of a blow through maf is usually due to packaging problems and stalling issues. If you have to use three feet of piping then what is the point!
There is a parameter in the code that relates size of the intake manifold in liters for the pcm; basically it helps the pcm determine how much air is behind the maf when it senses a throttle position change and an increase in airflow at the maf. That will help it reduce lean conditions and initial throttle tip.

Long story short, I use a my maf in a draw through configuration with a total piping length of about 3-4 feet. I have no issues with it.