I haven't made any serious mods to my '08 yet because there hasn't really been anything made for the new models. But i'm getting a a bit antsy. Now, my first issue/question is based on my previous car...I used to have a VW GLI, and i put a cold air, and diverter valve in it, and i loved the "whistle". Would putting a diverter valve do anything for my car in terms of enhancing the sound? I don't ever hear a turbo "whistle" w/ mine, but honestly i just don't know much about the subarus. my ex boyfriend did most of the work to my old car, but i knew a lot more about vw than i know about subbies. Anyhow, any help would be greatly appreciated, i know you guys are the best source for info, so, please....inform me! thanks a bunch!