Tubi exhaust system for F355

[Tifosi]

Anyone (who actually owns/has owned a 355) know anything about Tubi exhaust systems? Like, are they worth the money, do they actually improve performance, or just make a good sound. Seems like everybody who has a 355 in the US, has a Tubi exhaust fitted, anyone know why?

[craigw]

email QV London Ferrari: [e-mail] they are very good with advice and knowledge.