Changes in tone of exhaust while stopped.
First off, this is an awesome site. Lots of questions and answers being passed around. This is great. Glad to be a part of this.
My question is!
I have the Roush exhaust on my 2011 5.0. And while stopped at lights, etc, you can actually hear the exhaust tone change pitch and tone. Sounds like the cam timing is changing. Has anybody else noticed this. Is very noticable with the louder exhausts. I would assume ignition timing may be changing, but would the cam timing actually change at idle?
Thanks in advance, Dave
Wow, This 2011 Stang is FAST.