Factory-approved upgrades for the turbo toy.
Subaru’s in-house tuners, SPT, have worked their magic on a 2010 WRX STI to be displayed at the 2009 SEMA show. But the changes don’t entail much extra straight-line go: the 2.5-liter turbo engine gains a claimed 10 hp thanks to an SPT exhaust system, for a total of 315.
Keep Reading: 2010 Subaru WRX STI by SPT – Auto Shows
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Original Post By Google News Jake Holmes
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