3 month ago i picked my new Portofino and i'm very much satisfied with it apart from the exhaust note. So i've been searching for upgrade of the exhaust and end up getting Kline downpipes with 200 cell cat, Kline X pipe and Capristo rear section. I have a 991.2 Turbo S with full set of Kline Inconel exhaust which sounds way better than stock makes me a fan of Kline. It sounds even better than stock Portofino. This Tuesday i got all the parts fitted and i was surprised on how loud the car sounded even on idle with flaps closed. The exhaust note was much more high pitched and probably 2 times louder than stock. But there was a critical problem. It droned like crazy at 2000-3000 rpm made me feel the car is shattering. So i decided to change the Capristo muffler to stock. The result comes out surprisingly well: Exhaust note not as good as Capristo muffler but still much better than stock; very quiet on low rpm, loud enough on high rpm; almost no drone at all on full rpm range. The car is much more exciting to drive now and still a good daily driver. I may try the Kline downpipes + stock H pipes + Capristo muffer combination next time and will post feedback.