IAG MAF Sensor Block Off Plate For 2008-14 Subaru WRX, 2008-21 STI, 2005-09 LGT (Silver Finish)The IAG Performance MAF Sensor Block Off Plate for the 2008+ Subaru WRX, 2008 21 STI & 2005 09 LGT is designed to seal the MAF sensor location on cars that are converted to speed density tuning (where the MAF sensor is no longer needed). The block off plate can be used in a wide range of aftermarket intake applications utilizing a stock style MAF flange. The IAG block off plate is engineered and manufactured in our own facility in Westminster,