Are y'all referring to the direct injection ticking sound during idle? If so, you're hearing the injectors

 

oh is that what it is? If so, then I guess there's not much we can do to silence it.

 

I was expecting you to rev it near redline but was disappointed :P (and because I don't want to do it myself!). I actually just noticed that sound when I parked today and was wondering what the ticking was. I do like the rev sounds though. It starts humming at 4k rpm.