powdercoating would leave a thick coat of material over the fins, stupid idea imo. best way to do it is to go over it lightly with a can of spray paint or if you can afford the coin anodise it. i've heard good results from people changing it to black, not only with better intake temps but less attention from giddy

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MY93 Impreza GX 1.8L, 0hp, 0nm