I have had my Volant CAI on for almost a month. It fit very snug in the engine compartment. However still very easy install, no more then 45 minutes. I did not relocate the horns though, I just took them off the bracket and they are loose between the air box and front light. They still work so I could care less, eventually i will do a horn mod anyways maybe like a firetruck horn or something, that will make you crap your pants

. Anyways I have no problems with it what so ever. This is the first CAI I have ever installed on my vehicle, cuz of that extended warranty thing. I did not buy a Nissan Extended Warranty cuz stealerships warranties are garbage. So I called my extended warranty center (Mercury Insurance Group) they said I could change anything on my truck that was wear and tear cuz they do not cover it anyways and anything that does not have a moving part. I asked like the intake tube and filter. They said yes. I said what about exhaust. They said that is fine. How about suspension they stated we and no other extended warranty covers these things. Your manufacture warranty will but not the extended. So not sure about Nissan extended warranty but I bet they do not cover the tube and filter for your intake. As long as you install it correctly it will not hurt the engine. I think it even states on the box do not over oil or it will cause damage. It is not rocket science people. Also, after about 4k rpm is when it gets loud. Not sure about you but I can feel the difference as well as hear it. My friends as well as my mom are jealous. Cannot wait to put the exhaust on. I could not pass up the deal when i bought it ($200.00 shipped to my door 10k miles on the filter, it was time for its first bath) I love it, my .02