I was wondering if anybody knows if the sti intake manifold is any different to the 2004 xt. Any advantage to upgrading it? Which years sti will it fit? Plus it looks cool when you open the hood with the red intakes. Any feed back would be awesome
Well the fact that it doesn't "choke" isn't really what I was refering to. A good amount of the powerband characteristics are determined by intake design. Or put another way, when designing an engine, an engineer will design the intake manidold with the type of powerband they want in mind. It has to do with more than how much it "flows".the stock sti/fxt manifold doesnt really choke until you get around 600whp.
the 2.5i mani is nice becuase it bolts directly to the head and has no tgvs. it does flow more too but the dbw throttle body doesnt bolt to it.
dominic of maxwell power services runs the new plastic lgt manifold on his car (07sti). the runners on it i think are bigger and they look like they would flow better as well.