STILLEN 402846DF Generation 3 Ultra Long Tube Dual Intake Kit With Dry Filter - 08-13 G37 Coupe / 14 Q60

I love the aggressive sound the engine gives off now. Power gains are negligible at best, but I expected that until I get it tuned (but thats after I put exhaust on it). To me the sound makes it more enjoyable to drive. I think the added air woke up the stock exhaust a little (might be placebo though). Overall I am happy with the purchase and would do it again. On-ward to the next mod!The reason for 4 stars and not 5 is because it is not a perfect fit. I knew the install was not going to be fun but having to make unexpected, yet minor, modifications and not near perfect fit lowers it 1 star for me. The passenger side tube was not bent enough to not touch the wire harness that is routed up the passenger side strut, so I had to adjust the wire harness so the tube would not touch. Next, because of both tubes not being either long enough or bent in the correct way, the filters where not 100% (or at least close enough) fitted to where it should be when you push the filter over the tube (you can feel a lip in the inner part of the filter that would stop you from going to far in). It's probably about 1.25" off but still more than enough was on the tube to provide a seal. Also, more on the filters; Because of the bend or length of the tube the filters are not level. The filters and the portion of tube in front of the radiator point down about 20 degrees from a level point (eyeballed measurement, bascially a noticeable point downward). The point down of the filters and tube is not that big of a deal but the rest is more of a problem for me.For people installing this themselves: It is much much easier taking off the front fascia, and it isn't hard to take that off. Also, absolutely make sure you protect the intake tubes with something, otherwise you will damage/scratch it around the area where the tube goes through the frame support (where the original intake inlet was). I used the provided rubber tubes I had left over to protect in areas that were going to be touching. I did miss a couple places and got a nice groove in the drive side tube.