Without a bigger turbo, you won't see any gains from cams. Also, larger cams put more stress on the valvetrain. Some cams won't fit with the stock valvetrain as well.
cams will do for the wrx what they do for all other cars, well alot more for turboed than n/a cars. Also, the wrx is alot harder to install cams in that say , an EVO (pretty easy and only one).
What kind of cams are you looking at?
I think they are hks 272 cams,but i have the stock turbo at 15 psi and full racing exhaust so i dont know if they would work fine or if i would loose alot of low end with them.
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