Perrin Pitch Stop Mount Brace WRX / STI (2015-2018) Hyundai the factory ECU is comparing

the factory ECU is comparing the readings from a pair of oxygen sensors to measure the effectiveness of the cat

Injen Technology has just released their tuned Short Ram for the Scion FR-S / Subaru BRZ / Toyota 86

Add horsepower

The OEM MINI bushings are made of soft rubber to reduce noise

Perrin Pitch Stop Mount Brace WRX / STI (2015-2018) Hyundai the factory ECU is comparingThe PERRIN Pitch Stop Brace for the 2015+ Subaru WRX & STI does exactly what its name implies, it reinforces the brackets that connect the pitch stop to the car. Even under normal driving conditions, the brackets flex (see the animated graphic below for an illustration of this). The PERRIN Pitch Stop Brace acts as a means of helping to prevent damage and possible failure to your pitch stop brackets. Clutch Line Replacement Included in the PERRIN Pitch