K&N Cold Air Intake System: Dry-Flow Air Filter, Increase Performance & Towing: Compatible with 2009-2014 Chevy/GMC/Cadillac Silverado, Suburban, Tahoe, Sierra, Yukon, Escalade, Avalanche, 71-3070

2012 Silverado Z71 Crew Cab 5.3LMy new SIlverado seemed to "stutter" a little bit when accelerating. I eventually got used to it, assuming that's the way the new trucks drove. (I previously owned a '03 Silverado) Being an avid Amazon shopper I recently stumbled upon the K&N 63 Series AirCharger. After reading all the reviews and pondering spending about $240 for a few days, I broke down and bought it.SHIPPING:Fast as Always (Prime). The box came undamaged, but there were a lot of loose, tiny pieces of hardware at the bottom of the box (washers, nuts) However, this did not end up causing any problems.INSTALL:I have never really done much mechanic work other than on small Briggs & Stratton engines, but I found the installation to be pretty straight forward. When you remove the stock intake and first see the new K&N, you realize how bulky/ugly the stock intake really is. I used the directions that came with the Intake, as well as a YouTube video during the install. I took a few breaks during the installation, but I would say the complete install took me about 2 1/2 hours. It does require some drilling, but only a little. I found the whole installation process to be relatively easy, yet slightly time consuming.PERFORMANCE:Wow! The new intake looks GREAT. It really "cleans up" under the hood. I couldn't wait to take it for a spin! When at idle, I didn't notice any difference in sound (when sitting in the drivers seat). But, when I took off down the road, I knew I had made a good purchase. Not only does the engine respond quicker when accelerating, but it sounds amazing! It feels like it breathes SO much better, and it has a great "growl" between 30-50 mph. I didn't know my truck could sound like this. I originally bought the intake for improved acceleration (which exceeded my expectations), but the new engine sound was the cherry on top! (its not an annoying sound at all) I love cruising around town with a truck that sounds better, has more power, and might possibly have better fuel economy (haven't tested it yet)OVERALL:If you are considering purchasing this intake, and don't mind spending money on increasing the performance of your vehicle, DO IT!I'm glad I did.

I bought this a few weeks ago. I shared a image above of it on my 2009 Silverado 4.8L.Pro's: Easy installation. Noticeable sound change under the hood and from the exhaust. More powerful and muscular to say the least. Much cheaper purchasing from Amazon vs local stores. Easy to follow instruction, fast delivery.Con's: You have to drill a hole to secure the heat shield. I don't really like to drill holes in my vehicles. It wont stop you from installing it if you choose not to. The heat shield wall goes in place with and L bracket and uses the existing molded inserts, so the drilling in my opinion is optional.Not sure if the MPG will change or not, depends on how I drive I guess. But I did notice a improved throttle response and power increase.In my opinion worth the money. All trucks and performance cars should come like this.***Update***I have had this installed for over a year now and I can report it does improve fuel economy on the highway especially. I havent had any issues. On one of my last decent 300 mile each way trips I averaged around 22 mpg at average 75 to 85 mph cruise control speed. Barely going over 2100 rpm at that rate. So it does help and worth the money in my opinion still.

Ok to start off if you can't install this then you probably shouldn't be doing anything g to your vehicle your self its simple instructions are dead on and this product works great it doesn't get to hot because its high grade plastic and that's what you want the metal ones over heat no check engine light because you put your factory mass air chip back on and everything has a place I combined this with a volant throttle body spacer and this product has a mean sound when you hit the throttle you just hear the sound of a great breathing motor I've been running it kinda hard because been modin my truck so I've been testing out everything but in city I was getting like 13 14 mpg now I'm getting 16 and 17 and like I said haven't drove into conservatively yet so I can only expect more and for the power faster throttle responce and a gain in horsepower not sure on how much but there is a difference so great buy for the money my package was considered broken because it was dented so I got it for like 25 t0 30 % off and all parts were there with no damage

I was very satified with the K&N 63-3070. Amazon had the best price and installation was a breeze. The only items missing from the kit were 2 Ny-Lok nuts. All the bolts and screws are SS but the washers (flat and locking) and the nuts were zinc plated. So this gave me the opportunity to go the hardware store and replace all the zinc hardware for SS for about $4.00. The unit fit perfectly and looks excellent - it really cleans up the engine compartment. The engine runs and idles smoother and feels more peppy. It has a nice throaty sound when accelerating which I have a tendency to do more now so needless to say I have not checked gas mileage. I had preveiously installed a Magnaflow dual outlet 30" muffler which also sounds great yet quiet when cruising. I recommend watching the installation video on the K&N product web site. This was extremely helpful.

I was very surprised out how easy the install was and was very impressed by the improved exhaust note that resulted. While the gas mileage and HP increase weren't as noticeable, I have noticed a much better throttle response time when pulling trailers or other heavy equipment. In addition to the performance aspects, this cold air intake looks very good under the hood and clears up a lot of space once you get out the "clunky" stock equipment. All parts were in excellent condition upon arrival with easy to follow instructions provided. Overall, this was a great buy at just over $200, which is well below the $350 being charged by O'Reily, Autozone, etc. I would definately recommend the CAI for any of you looking to make some minor mods to your car or truck. Great product.