Iv'e got to say it: You came to a forum for crossfires. You asked about a noise your Crossfire is making, (and we here HAVE discussed, at length, many times, the odd sounds the m112 V6 makes, so we ARE interested in helping you.)

Then you post a video and sound of a Mustang. Sorry, but this makes no sense to me, either.

Let us listen to the engine you are talking about and someone here will try to help - unless you continue to offend those who DO try to help.