Caution........if you ever deal with AOA be sure to get it in writing. They will say anything to get you off the phone. I love the product,but will never spend another penny @ the dealership.They lied about fuel pump and cam follower issues and service manager told me to lie about needing a tow from another garage. Truth in Engineering. They don`t know the meaning of truth or reimbursement either for that matter. Customer service is the worst. My next car was gonna be an A5, not now!