deMort said:From memory they should have tape around the wiring plug .. use a bit of gaffer tape please to make a seal around that plug and out to the bodywork just in case .. 5 mins and a pair of scissors
EDIT ..
If you press the recirc button it closes the flap in the pollen filter houseing there by eliminateing and air going through there .
Worth a go!, I did put some masking tape around that gap but can't hurt to go around it some more. It could be the ones you have seen/done have been taped to prevent the noise as it seems they normally come without.
Also I checked the frunk plastics this evening, turns out I am missing the very top left hand screw fixing bracket which is why the trim was sinking. That and a new screw on the way from Porsche for the grand total of £3.50 delivered !
Re: Recirc - Damn I think I have already tried that, worth another go!
https://cimg1.ibsrv.net/cimg/www.rennlist.com/470x469_85/381/step1b-2-1--62381.jpg
If all else fails, then its back to the windscreen.