Installation on new Toyota 4Runner was easy to slightly challenging. Some threads on the heat shield could have been better. Overall, makes the vehicle have a decent growl sound without needing to tune anything with some increase in engine response. Definitely worth it. Will not void Toyota warranty. Keep stock parts if your concerned.

So far so good. I just installed the chrome version of this on my wife's 2018 4SkinRunner and it fits perfectly. No modifications what-so-ever were needed. I'm not sure why Amazon and others say this is not designed for the 2018 Toyota 4SkinRunner and will not fit, because it did fit and it fits well. The one thing that I had seen and read about prior to getting it was having to redo the looming on the MAS sensor where it exits on an existing bundle, but absolutely nothing was required. If you do get this cold air intake, when you are finished, there will be nothing that the loom bundle and MAS sensor are restrained to as before installation. It's not that big of a deal, but what I did was take some zip ties and secure the loom bundle down to an existing bracket on the manifold. It worked perfectly, but not necessarily needed.What took the longest on the install was simply unscrewing and unhooking everything in order to get the engine bay properly outfitted to install the thing. Once installed, you wonder what all of the Toyota stuff on the intake was for. There is a lot more room without those "pod" like things that are connected to the OEM intake tube.K&N really thought of everything when they designed this. You have to remove the horn which is held on by one bolt on the fender wall, remove one bolt that holds the power-steering reservoir on, and completely remove the air pump which is held on by three bolts, in addition to the original air box. There are a few electrical bundles to disconnect first and a couple of hoses to pull off, but it's really simple.Once you've got the K&N airbox bolted in place of the original; the horn, PS reservoir and air pump go back exactly where they were, but slightly altered to accommodate the K&N equipment. It's easy, trust me.The 4SkinRunner is my wife's vehicle so I don't really drive it that much. Occasionally, I'll take it to Tomball which about 15 miles away and I'm lucky if the mileage indicator will increase even a 1/10 of a mile with easy driving by the time I return. When I finished the install, I had my fingers crossed that everything would work ok and took it out for about a 6-7 mile loop around the area. I was flooring it, goosing it and basically everything that you don't do to conserve gas. When I started it out, the 4SkinRunner showed that it was getting 16.3MPG. (It's been on 16.3 for weeks.) Before I even got back it had jumped to 16.4MPG.The thing I hate most about the V6 4SkinRunners is how slow they are, coupled with horrible gas mileage. Of course, you don't buy one of these if you're concerned about the mileage; right? The fact that it jumped a 1/10th with what I was doing, has really got me hoping that there is much more in store in the mileage department on this thing with "normal" driving. And that, my wife will do.Does it get up and go any better? Well, it's hard for me to say since I don't dive it very much. However, I do know that it's fairly slow, but man, when I floored it, it sure seemed to get up and haul ass much better than what I recalled beforehand. I'm not sure if it's psychological or not, but it sure seems quicker/faster. I even tested it to get around some slow jerkoffs and it seemed very good at getting around them.At minimum, they are going to hear you, and you'll hear yourself too. It's friggin' loud and I installed the top cover to the filter which is optional. If you like a roar, you're going to love this. My wife will not like this beast that is lurking under the hood and has no clue about, until the first time that she puts her foot into her 4Skin machine. (Heck, she might come home and be all over me though.) If you're just doing normal driving, the sound is no different than stock. That's why I say she's going to get a huge jolt the first time she drives her right 6" Christian Louboutin into the gas pedal.So, only time will tell if this increases the mileage or not. I'll let her tell me if she feels that it has more get up and go. Of course, we could have bought the Lexus version which is either the GX460 or GX470 for a a lot of extra cash and gotten a V8, but you have to like the way the vehicle looks also and neither of us like the way the Lexus version looks, even though our other vehicle is a Lexus. The Lexus version is more up to date also, HID lights, etc., but it doesn't look as good as the 4SkinRunner, in our opinion.Back to the installation. If you have hesitated to get this due to not knowing if it will fit your 2018 4SkinRunner, don't wait any longer, because it will fit.The one thing that I would stress the most, is to make sure that you have a ratchet wrench with an extension, at least 6". Longer would be even better. If you decide to start and don't have the correct tools, you're going to be very irritated. Just go to K&N and look at the instructions and make sure that you have the few tools required. It's just that ratchet extension which is the most important.In addition, refer back to the parts and diagram list when going through the instructions, because the instructions are not good at all with which bolts, washers, etc. to use.Spend the few extra dollars and get the chrome version. It's looks fantastic.Cheers!

This review is for the K&N 77-9034KP kit installed on my stock 2014 Toyota FJ Cruiser.Pros:Install was fairly easy. 90 minutes to 2 hours is a fair estimated time for installation if you occasionally drop things into the engine compartment and have to fish them out as I often do.Sounds nice. Haven't driven it enough to judge if the performance increase warrants the price.Cons:The factory Toyota engine cover hit the large valve insert, that's on the chrome tube, slightly preventing it from appearing to close all the way. The cover did snap down all the way but had a hump where it made contact with this valve insert (PCV maybe?). I don't know if this would have been a problem with the cover popping up at some future time, but I didn't want to find out so I modified the cover. I used a large wire cutter to trim the area on the cover where contact was made to alleviate the issue. In hindsight, I would recommend heating up the plastic first, with a heat-gun on "low", because the plastic is brittle and tends to splinter making cut not as precise as I wanted.Rotating the large chrome tube enough to eliminate this issue wasn't possible as it put the angle of the chrome tube, on the opposite end, off by too much to make it fit into the filter box correctly.If the manufacturer moved this insert location back down the tube, or under the tube by an inch or more, this wouldn't be an issue. The factory rubber hose that connects to this would still fit, but might need to be shorten a bit with a knife or large scissors.The install documentation tends to be vague at times using such instructions as; "Install the provided mounting bracket (08022) onto the heat shield and secure with the provided hardware." (with a one-sided view of the object below it). Maybe explain what the "provided hardware" is, as numbered by the overall view of the setup on the front page. Do I need washers on both sides of this bolt or one side only? What about the lock washers.. why do I need them with a nylock nut (or do I)? This isn't a deal killer by any means... just a recommendation to clarify a few things better.I would have given this product 5 stars if the fit was perfect. But, having to trim the factory engine cover killed one star. The cover is now forever altered of which I don't really care but someone might. The vague instructions I can live with as anyone with common sense can figure out where things go.Picture of engine cover modification below.

If you want to improve performance and get better gas mileage, look no further, this is it!! I could not believe how this helped my car and my wallet. My 2015 Toyota 4Runner runs so much better. I really can't say enough about how this simple addition to my 4Runner improved everything it was supposed to do. This is real quality. Easy to install and worth every penny it costs. Spend a few bucks more and buy a Filterwears Pre-filter and it will make your life much easier down the road. I use the K305R for my K&N Air Filter. I am now one happy customer.

Was missing Hose and several clamps. Ended up taking to a mechanic….. not worth the time or money!!!!

Relatively easy install must have some basic DIY skills working on vehicles. When you pop the hood the silver pipe really catches your attention. Wakes up the trucks throttle response and the sound is a bonus!

Works as described. Installation is fairly easy, lets say 3 out of 5 difficulty. Great product!

Perfect fit good quality