Was easy to install in about 3 hours. There were few instructions but the pictures helped. I struggled initially, but a bit of silicone grease really helped with assembly. This should be stated in the instructions. The electrical air sensor is in a different location on the new K&N intake than on the stock unit. To do this I had to strip several feet of wire harness so I could get some extra wire length. I hate splicing small electrical wires as engine vibration always causes wires to short out over time. It was very quiet at first, but after 100 miles of driving I started noticing extra air intake noise. I think it sounds a lot nicer than stick but not offensive. I noticed more power and increased my mileage by about 6% over an 8 hour ride. I can't justify buying this product on the extra mileage alone, but the sound and the extra performance are well worth it.
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