I finally found the right torx tool (right angle thing I normally open hard disks with!)
Open hood about 70cm, undo velcro straps, Loosen the screw:
Which releases the elastic
and outside its very easy to sew on a replacement a similar length. Clip back over screw and tighten! Hood now closes without catching on the sides! Previous fix only lasted 6 months (staple elastic over old one – as seen on youtube)
After one year – Boxster’s intake noise has become boomy again – which I think is a sign of a dirty filter. So I did a quick swap. Of course quick isn’t really fast – half-open top, unclip hood, bungee it all back, remove speaker, remove soft cover, undo torx30 bolts (memo to self: find short torx30 first!). remove metal cover, remove air box cover, unscrew filter, swap plastic holder, push back in, reverse everything else.
