/ Hi, on the whole I found the Polini is a pretty ok exhaust. I found it a little bit awkward to fit and get a good fit between the down pipe and nthe expansion box. However, someone did suggest that the best way to get a decent fit is to put fit the whole exhaust onto the bike loosely, and then jiggle it about until you get a good fit and then tighten up all the fixings.
/ The exhaust performs well, although not really any better than the standard ETS exhaust. But then, you can’t really find a replacement ETS exhaust anyway.
/ Also, I have to keep my scoot outside on the road, and in the damp British winter I have found that surface rust has already started to build up on the Polini exhaust.
/ In hindsight, next time I might try either the LeoVinci exhaust. The Sito plus may also be an option as I have been told that they are a fairly reliable choice, and seeing as I got a puncture the other day having the option of carrying a spare might be quite nice.
/ Hope this helps.