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Fujita Air's downpipe offering is the newest to hit the market. Built from fully-polished T304 stainless-steel, Fujita's downpipe comes complete with extra features such as an extended o2 housing to eliminate any check-engine lights as well as an additional o2 bung for wideband o2 sensors without welding.
As we installed the Fujita Air system, we hit the dyno once again. With the addition of the Fujita downpipe, we logged an additional 14.6 horsepower at the wheels from 2,500 rpm and up. Torque was also increased at the 2,500 mark all the way to redline by a peak of 6.1 lb/ft of torque. To this end, the STi laid down 273.6 wheel horsepower along with 249.2 lb/ft of torque.
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