981 GT4 with MCS 3ways, Vitour P1 255/35/19 and 285/35/19 and TopGear Catless headers.

First day out with the top gear headers after a long install as well as the vitours. General observations
- Loudest and most obnoxious on cold starts
- Smell similar to being around a kart track, distinctive
- very civilized on the road with sport mode and exhaust flaps off and under 3krpm
- Sounds good on track, but with the helmet on, doesn't sound terribly different.

I have a track nanny( https://www.carpokes.com/viewtopic.php?t=25 ) installed and forgot that I had left it on for Laguna. It closed the exhaust flaps before turn5 and reopens after turn6. The DJI mic is on the rear quarter panel near the trunk so it's very noticeable on the audio when its on/off. Super interesting that even with catless headers I may be able to run low DB days with this - will have to do a soundcheck next time to confirm.