,
While the Voltex front bumper looks similar to the factory Mitsubishi part with an added giant splitter and canards, it looks massively wider than stock in person. This front end in total is probably somewhere around 6″ wider (estimated) than a stock EVO. 
A duct feeds an airbox with a K&N cone filter immediately behind it.
Here's what part of the airbox looks like with the bumper off. There is another section that acts as a duct that goes on and off with the bumper assembly.
Here's a view of the airbox from the engine bay. Notice the clean fabrication.
The Voltex front floor/splitter/diffuser/undertray has a considerable amount of features in it. It is mounted to the chassis by four pieces of aluminum channel and bolts. Naturally if the part is going to increase downforce, then it must be mounted to the chassis in such a way that it can transfer that force to the chassis. This entire front assembly is made from carbon fiber.
The canards have oddly shaped end plates, but then again a lot of aero parts have odd shapes (see any F1 car). Notice the front diffusers have fences in them also.
