i have the bmc cda on my 2.2 vectra b
i love it soooo much lol !
but....
theres no room for a cold air feed, unless you re-route the battery to where the air box was, turn the inlet pipe 180 degrees, then have the bmc cda with a cold air feed going down by the gear box....
needless to say i havnt done that yet as its so much work for near no gain lol !