sweeeet
ok, The kit is on and its gooood.
Im just going to write as much as I can because I know big posts like this are helpful to me when I'm interested in purchasing something.
For those of you who are interested in getting the kit. The 63 series has the black plastic tube and gains 12 HP at the wheel and the 77 series as the stainless tube and gains 7 HP at the wheel. This is probably because the metal intake on the 77 will heat up more than the plastic counterpart and thus not get as much of a benefit. It probably costs more too.
As far as improvements, first of all the sound is incredible. I had an FIPK on my 3.0 '95 and loved it, but on this 4.7 it sounds mean. I've only had it on for about 4 hours now so as far as gas mileage I can't say yet. Im sure it will help my mileage once I stop stomping on the pedal to hear it. According to the dyno K&N included, most of the hp gains occur above 4k rpm. I gunned it up there a couple times it felt good.
I wouldnt be surprised if I was one of the first to get the kit from K&N because there was an issue with the install. Between the parts list and the installation instructions they listed two different hoses that connect the intake to the engine. The part you want is the one on the installation instructions (#08690). The guy I spoke with at K&N said he was making a note so maybe they'll change the instructions. Other than that, the kit went on without a hitch. Everything fits snug.
Anyways, moral of the story, check the parts list to make sure you have everything...and ask them to overnight missing parts (they were about to ground ship me the part they forgot to include).
Now I know Volant's kit gains 17 hp vs this one's 12, so it's a matter of preference there. If volant has smoothed out the issues Ive read about, then it may be better deal. Like I said earlier I decided to go with K&N because Ive had their stuff before and they have a reputation. K&N has a lifetime warranty and re-usable filter (not sure what volant has here). The K&N is an open element whereas the volant is closed, so this makes a difference in air temperature and perhaps how much dirt/dust it comes in contact with. Not sure how much the volant is, but my kit with shipping and tax was 330. Well, now you got the facts, so the rest is up to you.
I'll post more after a while to let yall know of any issues, mpg, etc, etc.