Antennaman346 Posted July 24, 2022 Share Posted July 24, 2022 Howdy all, I've got an 09 OBXT 5mt. Curious whether there would be any gains to swapping an sti intake manifold. Saw one for sale the other day from an 06 that was hard to pass by. Would something like that fit? With a tune would there be any benefit? Thanks! Link to comment Share on other sites More sharing options...
BoozeRS05 Posted July 24, 2022 Share Posted July 24, 2022 The STi manifold fits, but the effort isn't worth the payoff as far as I've read. Our manifolds, while much less attractive, are just fine and there are plenty of turbo setups for them. It's my understanding the "best" Subaru manifold out there for making power is from something like a 2005 2.5RS bc it's got slightly longer runners. EB's Subaru journal - 2005 LegacyGT Wagon & 2014 Forester FB25 (2008 specB - RIP) IG@legacygtliving Link to comment Share on other sites More sharing options...
silverton Posted July 24, 2022 Share Posted July 24, 2022 2009.... if you change any part of your intake or exhaust system, you need a tune, even right down to an airbox/cone filter. Link to comment Share on other sites More sharing options...
Antennaman346 Posted July 24, 2022 Author Share Posted July 24, 2022 Yes, I'm aware. I have a cobb accessport that I've run for all my bolt ons thus far and just began the e-tune process with Ambot Tuning. Link to comment Share on other sites More sharing options...
m sprank Posted August 26, 2022 Share Posted August 26, 2022 Not worth the time or investment as the stock plastic manifold flows just as good (if not slightly better). Link to comment Share on other sites More sharing options...
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