This had been going on for a long time. Does not seem to affect anything im just curious as to what it is. About 80% of the time I let off the gas I hear a little "ping". I was wondering if it was my TB closing or something...im not sure. It seems to be louder if i only give it a little gas then take my foot off. Any ideas? Its not loud or anything and you have to be looking for it it hear it most of the time.

Get under the hood and give it throttle from the engine bay. See if you can narrow down where the sound is coming from.

Its probably the 1G BOV echo noise. It sounds like a high pitched ping noise, normal as far as I know.