I recently purchased a K&N 57-2553 kit for my 2004 Ford Crown Victoria LX Sport and it sounds great! It's not that easy to put together considering I had to do a few things like redrill the holes to bolt this kit to my car. Took me about 2.5 hours to assemble but the result was worth it. The car has a deeper tone, louder drone, better throttle response and even quieter idle than the stock system. Also, I saved an average of about $150 compared to other sites. I recommend this kit, but I recognize that more work can be added to make this kit work properly.
π Silicone Throttle Body Hose for Subaru WRX 2008-2014 - Mishimoto MMHOSE-SUB-ITBBK (Black)
9 Review
π K&N Cold Air Intake Kit: Boost Horsepower on 2015-2016 Ford F150 Turbo Ecoboost, 3.5L V6, 63-2592
9 Review
69 1018TS Performance Intake Kit
9 Review
π Enhance Your Vehicle's Performance with the Airaid 200-919 M.I.T. Modular Intake Tube.
9 Review