I've had my car for 5 years now (1.6K supersport), and will selling the car next week. New R400, with RTB upgrade, on order to arrive in April.
I also posted approx 3 years ago that I would be sticking with the foam baffle, and replacing it as appropriate.
So for information:
5 Years, approx 15k miles, 10 trackdays
Replaced it twice. No problems of any kind.
I had incredibly negative comments last time I posted on this, and have not posted since on blatchat, howvever, I felt now is the time to close the loop. I hope the negativity isn't repeated - I'm simply giving information.