Hi all,
I took part on a trackday at Croft on Saturday. It was one of the new 88db days.
I had the 350z (totally standard) noise tested before paying for the day, it came though at 77db which I was surprised at. A couple of my friends took their e36 m3 down (some kind of induction kit fitted) which came out at 84db.
It turned out to be a very good day and makes a nice change from the usual trek we make to other locations.
88db is not that low if your car is standard in the intake/exhaust department.