Its the race version so a little bit "out-there" to put it politely. It's rated at 98dB at its highest and with a jet plane taking off at 140dB you might get the picture (albeit a logarithmic scale). Although the noise around town and A roads was absolutely second to none. The sound it makes is the best I've ever heard from any after market exhaust system and really has to be heard to be understood.
If im going to be honest with myself, having a quick blast in the trophy last night, I do miss the sound in the cabin and there is a noticeable drop in performance, would of been interesting to see before and after figures, but it's noticeable so could be a few bhp.