Fitting this spoiler to your Elise doesn't only improve the looks, it also stabilizes the front end of the car at high speeds.
Certainly for cars with a tuned engine, which are able to reach high top speeds, we would advise to install a front splitter.

The front splitter is delivered in black gel coat and can easily be attached to the car.

It can either be glued to the car using Sikaflex, or you can use a stainless nuts and bolts (and pennywashers) kit if you plan to make it removable.