K&N E-2429 Replacement Air Filter

Its ok, I just expected more from this.
I noticed my MPG went down about 1 mpg vs the stock model that came with the new car.
But That could mean that this one is better at filtering more than the stock model. I'm no expert in cars but that could be a possibility. I do know that there is usually a trade-off between filtering and airflow. If I had to do over, I would have gone with the less expensive stock model that kept the MPG were it was as I don't plan on keeping the car well into its prime where the benefits of better filtering would extend the engine life.
So if you want MPG, I would recommend something else. But if you plan on keeping the car 10+ years, I think this is a good air filter that could extend the life of the engine.

Great item and price, but crappy packing. They used a nice large box, stood an air filter up in one corner, and then filled the rest of the box with packing materials. Part did arrive undamaged, but could have easily been destroyed.

I have really only been using the K&N for about 2-3K miles so far. I've noticed I can 'hear' the intake sucking air more with this air filter so I believe it when I read that it flows better. With higher air flow, I'll be curious to see how much the filtration decreases over a stock filter. My guess would be the filtration will suffer, but not horribly bad or in a dangerous way. Do not expect a huge HP increase with this filter, but I did get my best gas mileage after doing this filter, oil change, and spark plugs (37mpg HW).

In all I recommend this filter (so far) to anyone who plans on keeping their car for a while. With the cost of the filter and recharge kit, it is only saving you money if you plan on keeping your car for 90-120K miles after purchase of the filter.

had put this in for like 10 mos. on my 2006 crv and it plummeted my gas consumption to an avg of 17 mpg.the oem filter atleast was giving me 20.didnt notice any upgrade in driving performance especially on hard throttle.will not buy anymore kn filters as i think it is overhyped especially for honda engines like the crv.

huge notice in difference in gas mileage , car runs alot smoother too, great product, would recomend any k&n product