K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Towing: Compatible with 2009-2014 Chevy/GMC/Cadillac Silverado, Suburban, Tahoe, Sierra, Yukon, Escalade, Avalanche, 57-3070

Great air filtration and probably added power, certainly added a new sound under hood

2012 Silverado Z71 Crew Cab 5.3L My 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.

Installation was easy made my truck sound more aggressive and made my gas pedal more sensitive

A must for your pick up. HP boost is incredable. The sound is awesome on excel ration. Great proformance.

It is missing the air filter which itself cost 60 dollars and the box said everything will come with but it’s missing the vital piece and I expect that piece to come or I return it

Great product. Wish it was louder under the hood. I imagine the metal tube with open box would do this but great product nonetheless.

Put this on a 2010 Chevy Av LTZ last fall with the Amazon buy-it-together kit of the Airaid 200-617 PowerAid Throttle Body Spacer and the JET 69125 Powr-Flo Mass Air Sensor. Installation takes about an hour if you have some ability and the right tools. So far, after running this for 6 months or so, gas mileage has dropped 1/2 to 1 mpg. This would be bad enough, but there seems to be a noticeable response lag between giving the engine gas after you have let up on the accelerator. Starting the engine is noticeably less smooth. I have tried the 3 items in different combinations and the constant is the K&N Cold Air setup. I had one on a 2002 Av that I absolutely loved. Maybe the 8 to 4 cylinder on-off gas saving design has something to do with it. I haven't talked to K&N about it yet (I plan on it) but I may have to go back to the stock air intake and keep the Airaid 200-617 PowerAid Throttle Body Spacer & JET 69125 Powr-Flo Mass Air Sensor setup. Those items, esp. the throttle body spacer, work as advertised. UPDATE: Was messing around with this again and the truck was running better. Then I cleaned the air filter and oiled it for the first time. The extra resistance to the air flow must have helped because the truck runs a lot better, more like my old Av. Can't say it improved gas mileage any more though. I did put the throttle body spacer back on and that thing is a blast! Again, no savings on gas that I can see, but man does the truck respond when you mash the accelerator down! I upped my rating from 2 to 4 stars. One word of caution though.... a lot of manufacturers do not recommend oiled filters (messes up the MAF sensor). I may post again in the furure and let you know what I find out there. I also traded e-mails with an Eng from K&N. They didn't mention the oil vs. no oil data I obtained.

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.

Excelente para Avalanche 2010 z71

2010 suburban 5.3 super easy install. If you have the tools and the know how 40min tops. Runs nicely no general change in milage but a noticeable change in peddle response. Stock intake runners have huge plenums to reduce noise and seem to make it the peddle a little sluggish if you're looking for it.

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The installation went well. The truck does sound better, and I was impressed with the change in performance after installation. I was surprised changing the air intake would improve the response that much.

bought this to replace my factory intake with the drop in filter i like the added sound on it i also have a Borla s type single in dual out no tuner since i didn't like it and returned it was only running regular fuel tune. i also bought a filter wrap for it gives 2 years of water repellent protection and extra dirt protection just slides over the filter mounted on a 09 Sierra 4.8L might lose fuel economy but oh well gives extra sound dont know if it gets extra power but not like it matters im driving a 4.8 4 speed lol its got speed but not compared to my friends trucks