Grimmspeed MAF Sensor Block Off Plate WRX / STI (2008-2014) Porsche From street use to road

From street use to road racing and drifting

and as a result have designed a header that produces more horsepower and directly fits any forced induction applications

A4 (1996-2001)

Install kit included with purchase

Grimmspeed MAF Sensor Block Off Plate WRX / STI (2008-2014) Porsche From street use to roadSo you have a problem. You want to run a speed density conversion or blow through MAF setup on your STI but don't want to spend the cash to have a straight pipe intake custom fabricated. Grimmspeed has the solution. With the Grimmspeed MAF sensor block off plate, you can block off any intake pipe that was designed to accommodate the stock MAF without any welding or fabrication work. This simple fix installs in mere minutes and allows you to keep your