My UK Spec TT is (way) too loud for most track days, I have a Nur Spec exhaust and no cats, standard manifold, Blitz Induction kit, I went to a track day with a limit of 99db, they told me to hold the revs at three quarters of max. revs and they took their reading. 109db! I put in the Nur Spec insert which took it down to 106db, then the track sold me a load of fibreglass matting to suff in the exhaust with the insert. Eventually it got down to 100db with them being lenient on the revs but then every straight i got to my mate in his Skyline pissed all over me!! I was well down on power. Anyone got any ideas for a quieter track friendly exhaust without compromising on power?? Please help!