Less hassle to get a direct fit GD STi Spec C dual camber TMIC, the
08 STi one may be slightly bigger but you'll need to modify your
scoop splinter to actually make sure it gets all the air it needs not
to mention the TMIC brackets as it's alot wider.

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221.7KW-ATW 498.5NM MMS ROLLER DYNO & BUILT BY STi NINJAS, BUILD #318/600

EBISU SUBARU, SHIBUYA-KU TOKYO