You omitted that!

I would revert to the airbox, this could very well be causing this problem! Best thing you can do, is get rid of the induction cone, they do more harm than good on these cars, mainly due to the 'heat soak' they suffer from, so will do nothing other than create noise!

Also you are referring to the throttle body, these cars as with all modern cars do not have carburetter's.

Martin