Fitment Information Acura TSX 2.4 (2009, 2010, 2011, 2012) Specs & Features Dyno Proven - 12 whp and 12 ft/lb tq gain! This intake is 50-state legal (CARB E.O Number D-550-16) This system includes a Pro DRY S oil-free synthetic air filter which will never require to be oiled after cleaning. Increases throttle response Direct bolt on, no modification required No tuning required This system is two intakes in one. It converts from a cold air intake system to a short ram within minutes. Product Description aFe (advanced FLOW engineering) spends countless hours with each and every vehicle to ensure that their intakes produce the most horsepower possible.  Each intake is dyno tested over and over to ensure their design, air filter, and technology creates the best environment for the most power and torque.  We love this intake so much, we run it on our own shop cars! aFe uses their special high-flow conical air filters that allow the most possible air flow without letting in contaminants.  Each intake produces a deep and throaty sound and outflows the factory intake by an average of 30%! aFe Cold Air Intake Features: Dyno Proven Horsepower Direct Bolt On Installation Includes all necessary hardware