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#38: 12-06-2012, 05:24 PM
RallyMachine's Avatar
Title: Contributor
Location: The Nasty Nati
Car: VF52 05 Legacy GT 5MT
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The STi manifold has a larger port which give it better top end power but lesser mid-range. Because the ej257 revs to 7200 while the ej255 only revs to ~6500, this manifold is not a good fit on the legacy unless you swap/build the heads. That is unless you want the extra 5whp at 6000rpm while loosing 10wtq at 3200rpm...