That's a big filter haha! I took my filter off and maf again today to have a look and a clean, the maf is like new and the inside of my creation motorsport tip is bone dry not greasy at all, I plugged it back in and drove home from work and it ran a pig trying to accelerate with only two psi max of boost and it having massive lag and then suddenly shoot to 10 psi and take off, but I can floor it and nothing happen just 2psi and it be very slow, so I pulled over and disconnected it and it ran like a dream again! Mental. I don't know what to do as I don't wanna spend loads of money on a new intake and it not make a difference witch I think might happen as it was doing this before I put the cone filter on, suppose I could do a proper boost leak test? Could it be that?