Well I started the car and it was on like a champ, but when I when my Greddy Turbo Timer was on and shut the car off it made a release of air sound once the engine turned off and a minor sqeek...IDK if I am being paranoid, but it happened even when I just turned my car off normally without turbo timing it automatically...IDK if it has to do with that one time my check engine light flashed or anything just kind of worried please help in any way possible and I KNOW I AM KIND OF VAGUE, but question me adn we can work this out!