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The service manual suggests replacing the cabin air filter at every service interval. It’s especially important for all you 2003 Evo VIII owners since your cars didn’t even have a filter installed from the factory. With a new filter you will notice better smelling air and less dust/pollen in the cabin.

One of the basic mods for increasing power to any car is opening the air flow into the engine by replacing the stock air box with an open element air filter. The following installation is of the RMR air filter kit.

RMR includes their own instructions, however, our version includes a “short cut” and does not require the removal of the IC piping. If in doubt, always follow the instructions supplied with your products.