From their page:
High Flow Downpipe – P2 S60 V70 Turbo FWD
A down pipe upgrade will significantly reduce back pressure, allowing the engine to breathe easier and thus provide much improved throttle response, torque production and good old HP. The exhaust tone is slightly different (throatier), but not really louder.
Our downpipes utilize a ceramic 3-way catalytic converter. Also, an integrated flex-joint helps to eliminate stress cracking and vibration. 3” mandrel bent stainless steel is used from inlet to outlet for highest flow capacity and long life.
The oxygen sensor ports are retained as well as factory mounting points and connections. Our pipes also include attachment points for the heat shield, an ipd The Volvo Specialists exclusive. Also included are new gaskets and it’s compatible with the stock exhaust as well as most aftermarket systems.High Flow Downpipe