Brian I have cut outs that are always powered up and never had an issue. I just used the car today after sitting for a month, fired right up. The Forza has a switch so you can remove the power when the car sits. ADM makes one also.
http://lsa-conversion-store.myshopif...xhaust-control
I would contact either of them on the battery drain, but it is probably only going to affect a car that sits a lot. The switch on the Forza is part of the controller, the ADM you could just add if you wanted.. any how I hope you are well and find the way to avoid the Sound Booth LOL.