newbie question

[pur97tsifwd]

What is blow threw I see it alot on stuff?

 

[spoolup]

Blow THRU is when a GM maf is placed in the UICP to monitor the airflow instead of the stock MAS in the intake pipe. You need a fullthrottlespeed MAFT (translating unit to convert from hotwire to Karman) to do so. Looks like:

https://home.comcast.net/~utspoolup/spoolup3.jpg

Its the piece ABOVE the red Tial BOV.
It allows you to properly vent your BOV. But it requires a bit a finagiling to make it all work.

 

[DGajre777]

It replaces the stock 2G Mass Airflow Sensor (MAS), allows you to vent and removes a restriction before the turbo. The stock 2G MAS is good for about 400HP.

And it is called Blow-thru or blow-through, not blow threw.