Ok Dan today I tested the Z with the infotainment accessed sound setting selected for “Track”
Did this with the car in “tour” and “sport” drive modes. 250km of city, freeway and highway. The exhaust seemed like it stayed in loud mode the entire time.... although the revs were rarely below 2000.
Taking off from the lights or hitting it to pass it was loud as he// all day. Roaring under load and crackled like crazy on the down shifts.
So I’m good without pulling a fuse.
This is the first time I have tried this and it’s hugely better than using just the drive mode alone to keep the valves open.
Unless my exhaust valves are now totally stuck... which is ok too.
PS: epic burnout today. Couldn’t resist.
it's only fair that i make the same sacrifices you did today. The burn out is optional. I drove mine to the bodyshop today about 8 kms away and forgot to test it, was too excited about getting the splitter and side skirts on. Painting the heat extractor blades torch red to match the calipers. The body shop owner thought it would look good. It will be the only color on the car. Worse case scenario if i don't like it we will spray it back to Carbon flash.
Could be your pleasure too anytime. Although I suspect yours will do the same with just a bit more pedal. 
