Found spring in drivers side footwell - what is it??

[Bruich10]

I think I get it.
Searched on boost spring function on the net and found that a lot of Porsche owners remove this spring for added feel - although the pedal gets stiffer. A lot of discussion on rennlist actually.
The pedal on mine was always very stiff - I now believe the spring has been broken since I bought the car - 5 years ago.

So now I do not need to worry - I am used to the stiff pedal and I do not need to try to get into the nasty upside down position to fix anything....

Thanks for hinting the source VeryRed997!