Inside the airbox? part?
 

Changed my air filter this evening, managed to get the old filter out and new replacement in (Jetex filter) couldn't help noticing a rather large audi part sitting at the bottom of the airbox, now i've changed many filters over the years in different cars, what an earth is that part hidden at the bottom of the airbox? be interesting to know any clues?

Secondary air injection pump I believe ?

Ah many thanks for the info that sounds about right! +++

I see the MAF is under the lid of the airbox as well in mine looks like its been cable tied in there, possibly snapped from where its meant to go is that right?

MAF is supposed to be under lid.

Yup definitely should not be cable tied!
Check the plastic mounts to see if they are broken.

mine is cable-tied too