Matt was very professional. He took his time going over a diagnostic on a car that has given my nephew so many problems. With his advice, and knowledge, we were able to make the best decision in regards to our car. A man came in with such a poor attitude. The man was so rude that he made me and man son afraid, but Matt never lost his cool, and was able to assist the rude man in such a respectful manner. It was such a pleasure to witness such professionalism at Excessive Performance in Killeen, TX. I will recommend others.