Exhaust open flaps from under the hood

I was looking to get under the car and plug the vacuum tubes to open up the exhaust on my 2011 Cali. I stumbled on this method that seems 100 times easier. Has anyone given this a try, and did it work?

I noticed on the original thread the OP was banned, so was making sure it's a legit way to do this.

I recently bought my California love everything about it ! I did however wanted a bit more sound from the exhaust, I managed to find the vacuum line leading to the rear of the car ,(not sure if this has been posted before) and would like to share it for those looking to open up the exhaust flaps in 5 minutes. It’s located under the hood on the passenger side fender look for the line with the red tape, simply unplug the line and cap it.​