I purchased and installed one of these BMC induction kits..... Its well good!!
Everyone is right about the sound being excellent but whats good is that you can choose when 2 make the sound! If you drive normally or economically then there aint no difference (apart from gettin a lil more bhp and more mpg), but if you wanna give it some juice then you can and it will make the gorgeous ROAR!
(For people who know what musical Harmonics are... you can hear deep rumbing harmonics with this installed, yea it sounds lovely)
Mine is a Fiat Stilo 1.6 16V Active Sport, i got the CDA85-150 installed in mine, the 85mm diameter was the same size as my air inlet hose that i seperated from the standard air box. As it's a black rubbery hose i just made a little cut and slid the hose over the BMC and secured with a jubilee clip that was provided.
I think i might make a little Guide along with this one to fully illustrate what steps to do.
O btw please note.... It says on the BMC "Not For Road Use" but i have had it for 10months now and its perfectly legal. 1) It has been insured for an additional £40-60 ontop of my annual insurance which is all good
, and 2) It has been passed in my M.O.T. so i think its an excellent legal modification to your car.