The New Ancillotti sport not only makes more power, but is also much quieter thanks to improved internals, and an additional new alloy muffler.
Instead of the baffles being internally, they have been taken out to allow better gas flow and pressure for added performance. The end can due to its increased length helps improve performance, but also quietens the exhaust to much better levels.
NOTE: Even though it shows the u-bend in the picture, Standard or TS1 u-bends are sold seperately. This makes it more flexible for you as you can order exactly what you need.