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Should I replace the uppipe in my STi or 06+ turbo Subaru?

April 26, 2017replace sti subaru TURBO uppipe

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Should I replace the uppipe in my STi or 06+ turbo Subaru?

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All STi and 06+ turbo Subaru models have a catless uppipe. The big difference is that that the STI or 06+ turbo Subaru went from 2.0 to 2.5 displacement. Buscher Racing (post 318 and on) proved that going to an aftermarket uppipe vs. OEM catless does show gains. Does this mean an uppipe should be thought of in the upgrade path for 2.5L Subarus? Though it was once thought no, now one should consider it.