How about a bit of a fun thread, lots of us like cars and have done all sorts of mods to them and are probably boy racers at heart, so tell us what you have and what you've done to it to make it go fasterer or sound louderer :-)
I'll start off and you'll probably laugh ...
Smart ForTwo
ECU remapped to make about 78bhp and 115nm, now idea how fast it goes as it runs out of speedo numbers (not as impressive as it sounds!)
Next on the toy shopping list will be a better flowing exhaust and air intake setup.
... I'm aiming for New Zealands fastest roller skate ;-)