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 5.3L 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.

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

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.

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

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

This system does not fit on a 2009 GMC Sierra 1500 Hybrid with the 6.0L engine. First the mass air flow sensor is completely different than what is in the instructions, then secondly the Hybrid Cooling System is too close to the intake manifold and there isn't enough room for the intake pipe to fit onto the manifold. I have contacted K&N directly and they admitted that it would not fit this truck and have since removed it as supported for my truck on their website. Apparently I am the only one in the world that has bought this system for this specific truck as there is no other information on this ANYWHERE. So if you are looking...someone has now done the work for you... Too bad...I would have loved to have this on my truck as K&N is a superior brand and they make superior equipment. Not for the extra horsepower, but for the little added MPG I would have gotten from it.

This is a high quality product. Took me about an hour to install on my 2012 Silverado LT (Z71, 4x4, extended cab with 5.3 L v8). The only drawback is that it required drilling with a 5/8" drill bit in one spot, and my hand drill chuck was too small for that, so I had to fabricate a quick bracket which made my install a little less OEM quality than I'd like. The box uses a couple of factory holes so it is still secure. The tube and filter use the K&N supplied box to create both a cold air box and secure it to the engine bay. I already have a Gibson stainless dual exhaust - this gave it a deeper growl and you really hear it when you get on it. It doesn't drone, and is only a tiny bit louder than the exhaust alone. When I remote start the truck I can hear the deep va-vroom from inside the house. I didn't want a overly loud truck and this meets my expectation. There are claims of improved fuel economy... I just drove the truck on a 600 mile highway trip directly after the install and I achieved maybe 16 mpg. I pretty much get a long term 14.5 mpg no matter what I do, so any mpg gains are not significant and a hwy-only trip is not consistent with the long term mpg. Frankly, I drive more aggressively because it is fun to hear it, so I haven't seen any big mpg increase and for the first half-tank it went down! Lastly, with the exhaust and I take the truck still seems a little uncalibrated in a few spots through the RPM range, which a tuner/programmer might correct. These are minor issues.

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