K&N Typhoon Cold Air Intake System: Easy Installation, Engineered to Maximize Airflow, Boost Horsepower & Torque, 69-9000TS

Idk what the other guy was talking about it clears the strut tower brace with no issues was pretty easy to install the hardest part is taking the stock air box out

Nice improvement over the stock air box. Noticeable increase in power, and it drastically improves the amount of room in front of the engine which makes oil changes significantly easier. There is more turbo noise which could be either a plus or a minus depending on what your goals are (its a plus for me). On the downside, my car is a 2011 C30 R-Design, and there's not quite enough clearance between the new intake pipe and the factory strut tower brace. I had to use a hammer to dent the pipe so that it wouldn't rattle like crazy when the engine was running. Its the only reason I didn't give this a 5 Star Review. If you have an older car without the strut tower brace, this will not be a problem.