My mate told me i would get more power if i removed the air filter, so i removed it and went to clark rubber and got some flexible piping i screwed to the bottom of the front spoiler for a cold air intake. It makes a bit of a turbo noise now, yay!
I also went to the extreme of removing the headers and cutting it just before the cat. It gives it some extra watts and makes a nice noise, but its slightly too loud and too illegal so i will have to figure something out, in the mean time i will just enjoy what i have.
As for weight reduction is there anything else other than the seats i can remove???