See also:

Engine
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2011 Subaru Impreza WRX STi review
Driving the 2011 Subaru Impreza WRX STi transported me to a world that was completely foreign. It's a world that's less centered on booster seats and storage cubbies and more focused on rally raci ...

Air filtration system
Replace the filter element according to the replacement schedule as follows. This schedule should be followed to maintain the filter’s dust collection ability. Under extremely dusty conditions, the fi ...