the principals are all good, a cold air feed, an enclosed filter to counter heat absorbtion from the engine bay and to produce a ram air effect from it being sealed and not open air.
if it were me, i'd like to see the "suitable for engines up to 185bhp" a bit higher, say 200bhp, not because this part alone will provide anything like a power increase to that degree, but because if it will allow air flow up to a maiximum of 185, your 2.0 ts should already be around the 150 mark, so the filter will already be running at near max flow rate.
if you ran a bigger capacity filter, the MAF will still control the fuelling level to suit, but at least you'll know your getting as much in as possible for a stock MAF/ECU set up, and not potentially limited by the filters near restricted flow rate.
Regals Motorsport also do the Ram Air version, and forum member Typos1 has claimed good results from it on his 147 TS, for about the same money too, i think he said he paid £45 for it.
But when i said good results, i'm not talking huge power hikes, you should expect more likely better throttle response, sound, and aesthetics are the usual gains from this mod alone.
Not bad for the money anyway, it wouldn't be a huge expensive mistake if it proved no better than stock would it, and i doubt it COULD be worse than stock Alfa airboxes!!!