No.
It is when you are just pootling around but when it gets to about 3000rpm it is quite loud. when you drive it hard it sounds lovely, its very addictive.
It's very well made though and you don't need to get anything else to fit it. It comes with all the clamps, hangers and cat to middle section gasket. I bought a new rear exhaust mount as mine was perished as well.
I would have got a Yozza but he didn't have any in and i couldn't wait. The K-tec system, fitted, was still cheaper than buying the Yozza one as well which is a bonus!