Hmm, when my car is fixed, i will tell you if i feel a differance to the raceland to BMC, as the raceland was very restricting due to where it sits
the BMC i have cut a hole in the slam pannel perfect size for my cold air feed, coming straight from the grill (no mesh on grill to make air divert in different ways - this sounds anal..) and should perform much better i think, but car will defo be back on the road at christmas

so only then i can tell you the differance, a decated system also makes the car feel allot better
but then again - with new parts applied to your car, its an feel of an illusion that there is allot more power, when in natural fact - there most likely is nothing gained, only a rolling road can tell.