There's quite a few threads on this topic already. The search feature is your friend. 
Who is using K&N typhoons
FYI K&N Typhoon
K&N Typhoon Release
K&N Typhoon Intake & other mods
I installed the Typhoon intakes a couple of weeks ago and so far I like them.
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2011 Brilliant Silver Touring/Sport/Nav/6MT --- Build Journal
F.I. SS 18" CBE | Takeda CAI | Z1 25-Row Oil Cooler | Swift Springs | Hotchkis Sway Bars | H&R 15mm DRS Spacers F&R | RJM Clutch Pedal | UpRev Tune
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