And some consolodation from various other weight saving threads:
KW Clubsports are 1.7Kgs lighter than standard Cup suspension.
OZ Ultraleggeras are 8.4Kgs (4 wheels) lighter than standard Speedlines
Recaro Pole Positions are 14.4Kgs (2 seats) lighter than standard Recaros
Removal of back seats will save 19.2Kgs
Akrapovic exhuast will save 7Kgs (estimate) over standard exhaust
Total saved 38.3Kgs
If you consider that the Cup is 46Kgs lighter than the FF then if you Cup your FF (Remove aircon, electric mirrors etc) then you could see a savng of 84.3Kgs (Which is quite a bit).
Further removal of door cards for carbon badboys will see a weight saving of 4.8Kgs (7.8Kgs-2.8Kgs)
Stereo and speaker removal saving of 2.5Kgs.
Removal of front fogs saving of 1Kg
0.5l of window spray instead of filling the bottle will see a saving of 4Kgs
Not filling the fuel tank all the way up (Quarter tank instead of full tank) weight saving of 32Kgs
Total saving of the above: 128.6Kgs
Thats a lot.