Hey guys I am looking into getting a used B7 S4. I would like to know more about the APR ECU chip, mostly what would happen if a dealer did find it in my car. Also I would like to know if it is really easy for the dealer to find it in your car. Please lmk. Thanks guys.

let me state that I am sorry for reposting this topic, but I looked around forabout half an hour w/o finding a good answer. Also does this affect the reliability of the car at all? Once again thank you for any help.