Reviews: K&N 57 Series Performance Air Intake Kits

easy install, under an hour, noticable increase in performance, win win - performance and better fuel consumption...not much more to say if you tow or if its just daily driving you will immeadiatly see improvements.

Took my truck out to pull some big hills in high altitude and it performed great . This intake made my Hemi sound like a beast from under the hood. Once I hit 4000 rpm it is hard to talk to someone next to you in the cab. This intake is perfect.

I combined this product with a free flow exhaust from Dynomax and a Superchips flash pac tuner and the results were even better that what was suggested by 4 wheel parts...I set the tuner for econo mode and our Jeep JK went from 14 and 17 mpg to 17 city and 21 highway!!! Even with it in the econo mode, it seems to have more power than stock as well....

I put k&n stuff on all my trucks. They work excellent. The instructions are easy to follow. I also put a throttle body spacer in at the same time with installation, the two work well together. Just as promised, it does give a difference you can feel! Absolutely worth the money!!!

easy to install took about 45min, more strugle getting the oxygen sensor out of the old intake than installing the rest of system. truck sounds great and increased power.

CAI was easy to install, sounds and looks great. There was a noticable increase in power/torque as well. Awesome product, very clean looking an amazing build quality too!

Easy install, can really tell a difference

Super easy install! And the truck no longer acts like it has asthma!

Installed on my 1998 Dodge Ram V10 and you can really feel and hear the difference! MPG gain of around 1-2mpg so far, but should pay for itself within the year. Look forward to buying more for my other Ram and Yukon

After the hour or so install it showed it was worth it. A few things I noticed was the air intake improved the performance of the engine and added a nice deep roar to the engine when you step on the gas. Last I also noticed a top speed increase, I can't tell how much because the needle is stopped way before reaching top speed now. This intake made a big difference, I would buy it again

Easy install. Took about 30-45 minutes I am a professional mechanic, but can be done by a novice with basic tools. Hardest part is getting the old air box out- it snaps into rubber grommets and doesn't like to come out. Fits great. As dyno sheet shows(via K&N website)- no big improvement in power with the kit alone(3-4 HP gain around 4,000 RPM's), but should compliment other performance enhancers nicely(tuners, exhaust, throttle bodies/spacers, etc.)- but has a deep intake tone anywhere above 2k RPM'S at 3/4-WOT. Haven't done the math yet as far as fuel mileage, can't keep my foot off the skinny pedal yet!!

Excellent product, it improves horsepower, tons of airflow, simple, and also improves my MPG

This was my first add on to my 2000 Land Cruiser and I have no car know-how. [...]

Installed in 2007 Classic GMC 1500 4x4 with 6.0l engine 6" lift. Tire size is 35x13.50 R20. The power is unbelivable. I am able to smoke the tires off the truck if I want to. I did get a increase of 1 MPG in fuel usage. I now get 16 MPG. That is with dual exhust all the way from the engine to the back.

product is good n easy installtion

I have installed a K&N air intake in all my vehicles that have one available. I have put K&N filters in those for which no air intake is made, and I have emailed K&N asking them to make full intakes for those vehicles. I like the way they fit, work and increase air flow. I like the ease of cleaning the filter and the benefits of re-using it.

Should have put one on years ago.

This is one awsome product and i think it works better then the airraid i bought for my old truck, it gave me great sound, awsome off the line pedal to the floor, and great MPG, and for a big heavy truck like the Ford Excrusion 2001 5.4l, any will help, its an easy install, about 30 mins, looks great, and light-weight, worth every dollar.

This unit was installed on a 2003 Ford Ranger 4x4. There was an immediate feel of more power, and it changed the tone of the performance exhaust sysyem that I had added (purchased from you). It runs great and sounds great. Thank you for the great products.

This was an excellent addition to my F150. I was surprised in the added horsepower that I instanty received.