hi lads and ladys. i have ordered bmc cda which will arrive on friday and will have ago at fitting it between me and a mate . question is , in the back of the upper section of my standard airbox it seems there is an electric thing plugged in ( i am told the is amplifier or some thing) what do i do with this when kit is installed. also some shops say i need breather pipe others say dont need.

I have agu 1999 1.8T .
Thanks