If you want good value for money, I hear those eBay solenoid chips are really good......
I think the best way is racing stripes myself, I also heard that SCN stickers are worth 10bhp.
or I suppose you could remap it.
or fit a gigantic turbo.
or put a supercharged V8 in the back seat
or just do a search
i see what you guys did there...
how about some LED washer jets?
you know where this thread is heading for dont you...