Subaru WRX & WRX STI Performance Chip

The Evolv performance chip unleashes your Subaru WRX & WRX STI's hidden power and improves your fuel efficiency. With the Evolv performance chip, you can safely increase your Subaru WRX & WRX STI's performance by up to 35 horsepower and increase your fuel mileage by up to 5 MPG.