How much horsepower will a drop in K&N filter give me?

I put a K&N on my truck I also removed the screen before the air filter box and don't forget to remove the positive cable for 5-mins so the computer can reset and re-learn the new air-fuel mixture. You will hear and feel the difference. Remember more air means more gas and less miles per gallon! (OUCH!)

first of all you wont notice much if any difference; seat of pants difference takes more than a 2hp increase. secondlyin response to the guy above dont you think engineers spend countless hours do making sure that the stock paper element isnt restrictive and how will there be more sound? thirdly it will use the same or less amount of gas until you floor it all the time naturally the milage is most dependant on the driver

yea more air means more gas, but your only going to get more air if your accelerating harder. The K&N filters simply make air flow less restrictive, and thus more efficient. You will see nothing but improvement. However, k&n gets expensive. A k&n for my car costs about 180 plus shipping, and i got one off ebay, just a s good, for 70 shipped

1 - 3 hp max, and it does flow in lots more air, but it also flows in lots more particles. Stick with the factory style air filters, unless you're getting a decent WAI or CAI.

Paper filters are not 100% resistant to dirt and particles.

The industry standard is 96% and K&N meets those requirements. I doubt the validity of the these independent tests. Botton line, I installed one on my GTI and there is about a 3% increase in hp BUT the throttle is more responsive and I actually can hear more of a growl!

regarding KN performance I do notice a small amount. I drive often and lots of miles per year. the last KN filter I used for over 100,000 miles with no damage to my engine in all weathers so negligible particles do not get through and the bonus is the durability of the filters, sure they cost more but you never have to replace them (unless damaged). I just remove the KN, wash it out every 50,000 miles or so and coat in a thin layer of engine oil then replace. just remember to tell your garage not to replace the air filter when you service your car. works out cheaper than changing the paper ones every 15,000 to 30,000 or so. iv used KN filters for years on many cars and never had a problem. and no dealer or mechanic has never told me I shouldn't be using them.

Bought my 2006 mustang gt new in Sept. 2005. Replaced stock air filter with K&N drop in filter and noticed an immediate performance boost. 0-60 times 2/10's better. 5.1 to 4.9 (auto trans and 255/50's). Best thing is increased throttle response. Stomp it with K&N and paint long black burnout lines without power braking.The car could not do this with stock filter. Same performance now with 30k miles and have not touched the filter.

1-3 horsepower, which is about what you would see in a temperature drop of 5 degrees

Without changing driving habits I got a 1mpg increase. Hard to tell if there is much of a difference in HP. My truck (F150 3.5L Ecoboost) has always pulled and accelerated like a banshee. With that said I really got because of money savings over the life of my truck not having to buy air filter after air filter.

Just the filter won't gain you much if anything but if you go with the upgraded K&N intake system you probably will gain several HP especially if you upgrade the exhaust too. I think K&N can back up their claims with dyno data. Don't use engine oil, use the correct air filter oil!

I heard from some folks who have a K&N Air filter that it ranges from 4 to7%. I'm guessing with my 2012 Camaro 2SS with 400hp without the K&N Air filter (Auto) that it will range from 416 to 428HP new HP ratings. 400HP x 4% equals at least 416HP. your thoughts?

gives increased airflow and better throttle response if you have a turboed car youll hear the difference in the sound of the turbo spool

ABSOLUTELY POSITIVELY NONE ON A STOCK ENGINE!!!!! NONE!!!!!!!!!

All these people claiming they've gained 1-3 hp are total freaking idiots!!!! How do they know, because they "THINK" they can feel the difference when they mash the gas pedal down???? I don't hardly think so!!!! In a car you will NOT notice a 1-3 HP gain!! 1-3 hp gain is barely if at all noticeable on a 500 lb motorcycle let a lone a 3500-4000 lb car!!!! The only way to tell if you've gained any hp is to have your car PROFESSIONALLY run on a dyno machine and those numbers will tell you that hp gains with a K&N are minimal at best!!!!!!!!!!! And even if you did run your car on a dyno and gained 1-3 hp, those gains could be attributed to a number of things besides the air filter like air temp at the time of the dyno run, humidity at that time, barometric pressure, tire pressure at the time, fuel etc etc etc. 1-3 hp can be had or lost from day to day depending on those factors and those factors alone and not because of putting in a K&N air filter.

I put a K&N on my 05 Stang...great throttle response. plus i changed out the stock headers for BBks and 40 series dual flow masters with an x pipe. car runs mean and sexy.

There is definitaly some improvement with the K&N air filter. I don't think it right for Mr Tom there to call people idiots just because they feel some slight power improvement. It is proven on dyno results that in using a K&N filter does help improve slight hp. Either it be 3 ho or 5 hp. Bottom line you are gaining and are not going the opposite direction. Then there are savings in usung one filter instead of replacing it every so often. You are also contributing to the environment. I am happy with my K&N air filter and do also feel the car respobding better. What do i drive? 124 Abarth Spider twin turbo.

I have added this photo on my fuel consumption. The driving conditions were a nice sunny mild day and temperature around 28c. My car also just had a service a few days ago, so tyres e.t.c are what it should be. The Car is a 124 Abarth Spider 170hp 2017 model. My drive on the day was a leasure drive but giving my Roadster stick every so often as well. You should find just like i did that fuel consumption are nothing to be concerned about witg a K&N filter unless one has a lead foot most the time. I am pretty happy in the results my car shows ne on the display.

The regular drop in filter will give you about 80 horsepower or so. After I installed one I was able to do 200 foot long burnouts in my 94 civic automatic. Yesterday I raced a hellcat and almost won. Also, it sounds so sweet now, my car sounds like a fighter jet now

Thanks ABARTH. I just bought one Friday. Pretty peppy as it is but I always add a K&N

Hahaha is this site called car gurus or car gullables? K&N filters will do nothing for your engine except lessen its life time. The guy who called everyone idiots was absolutely right. Don’t want to be an idiot, open your eyes, do some research and apply some goddamn common sense.

Good on you! You will always have some critic but from personal experience all positive with the K&N filter.

Have used K&Ns on two Audi V8s as well as a Yamaha FJR 1300. Love them. Barely noticeable snappiness to acceleration. Frankly, not sure if one gets a measurable power/torque increase, but certainly the airflow is better/less restricted, and that can only be good. Have over 100k on one of the Audi filters and have used the proper K&N "recharge" system to clean and oil the filter. Love 'em.

I have used K&N filter on most all my cars and trucks and to the guy that called everybody idiots is clewless. In my case a night a night with 5 or 6 runs at the track always proves they are better than stock 1 or 2 tenth off the 1/4 mile is a big deer if you like racing.

I just purchased one for my 88 corvette I used the K&N filter on my Yamaha 650 and liked the way the bike performed. I just purchased the Corvette in the fall of 2016 and decided to go with the K&N. I really do not believe that these filters will add horse power but it will benefit throttle feel or is it in our heads or clever marketing? The power of suggestion is great. Take care.

It's about 3% so my 164 hp jumped up to 170... K&N back's it up...

2015 Mustang GT. Can't prove horsepower or torque increases, but throttle response is slightly, but noticeably better. Engine has a more throatier (word?) sound. Really like being able to recharge filtration without having to replace the filter.

2012 Toyota Camry XLE 4 banger with K&N drop-in produces much better throttle and transmission response than the factory setup. However, that extra oomph sacrifices gas mileage. Dropped from 37mpg to 32mpg highway. An acceptable trade-off considering the car now gets out of its own way quite nicely.

Most of these responses are hilarious. The “throated” sound is the fact that you disrupted the even flow of air over the MAS. Although the K&N is able to flow more air you cars engine can only draw so much volume per cylinder and is then metered by the MAS which in turn will determine the correct amount of fuel to deliver. Many of you need to learn theory and engine basics and if you claim your “butt dyno “ feels such a difference after installing a K&N filter you must have a magical butt. I’ll tell you what I Amin the FAR south suburbs of Chicago and I have a dyno in my shop with that said if you come to my shop and do nothing but change the drop in filter and make any more hp I not only won’t charge you the dyno fee $75 I will give you the price of your K&N filter in cash AND I will give you a voucher worth $129.99 to have your car hand washed- waxed and clay bar/ detailed.

Install K&N , have fun .

5-10 HP ON A bASE v-8 mUSTANG.

Why don't you give your phone number to your shop I want to get paid and see you go broke big talk let see you back it up or shut up

Halve Of These So Called I Think I Am Smarter Than You. The K&N Filter Does Work And Works Very Well. As Far As The Performance I Think It Is All Different Depending On Application. I Once Had A Ford 3.0L Ranger,I Was Pulling My Boat, Went To Pass Someone Almost Got Killed, It Wouldn't Go Above 58mph. I Took It Put A K&N Air Filter In It A Magnaflow Exhaust And A Throttle Body Spacer. Towing Boat Was Able To Pass At 73 Mph So It Does Work.

TL;DR on some cars they definitely work, but you won't be able to feel the difference during normal driving. When replacing the stock air boxes and paper elements on an 1800 MG B GT with bolt-on K&Ns over the carbs, I had to re-jet the carbs to get it to run properly, so in certain circumstances K&Ns definitely change airflow enough to make a difference. It all depends on how good your stock induction and paper filter are to begin with. I was pretty curious as to the difference on a modern car with a decent stock system, so I dynoed my 2016 Mustang GT, without, then with, then repeat-without, a Green oiled-cotton drop-in filter. The car is otherwise stock. I saw a peak-hp gain of 5hp with the cotton filter, a maximum gain of 15hp around 4500rpm, with the average gains throughout the rev-range being about 10hp overall. So that'd be consistent with the many reports you see of a 1-4% increase. You couldn't feel that yourself in daily driving, although maybe the better airflow would then allow you to make bigger gains with other mods (or allow your car to run better with other mods). The main benefit is the financial and environmental benefit of having a lifetime reusable filter, and a potentially cleaner-burning car (if you don't drive like a maniac). I'd take these results with a little caution, because a chassis dynamometer, just like any other device, has a certain amount of measurement-error. Additionally, factor in weather changes and the temperature of the car itself, and you've got even more sources of variation. Things might be different if you have an open cone / CAI. Then you'll get the throaty induction-roar that's muffled by a standard setup, and possibly greater, more measurable horsepower gains - but you also then have to worry about heat from the rest of the engine bay, risk of water ingress, potential need to retune because of moving/removing sensors, etc. Also, one final note - since installing the panel-filter, I've had a fraction of an mpg improvement, but it's so slight, the skeptical part of me still thinks it's random variation. It's certainly not enough to make the filter worth buying on fuel-savings alone. In short: Does it work? yes. Is it worth it? Depends.

ppl ive run k@n my whole life every car the drop in does create more air flow in my experience alil mpg gain an tiny accelerationonly problem ive had i spent 422 bucks on cold air tube w cone on 2001 toyota tacoma 3,4 v6 it threwa code left bank too much air but did make a big diff w helix throttle spacer an irridium plugs ngk irridium plugs gaurantee 8hp so they are good investment, you have to temember every engine different sum dont care nvr thow a code but toyota picky i now have a 2,7 tacoma it says the cold aor tube will actually rob the engine of 8hp,so do your research i just used a drop in can tell teeny bit throttle response but im dealing w 159hp so its never going to jump bad, biggest thing you can clean the filter an it does get jus as many micfrons particular dirt as paper so it good investment an will not shorten engine life,jus keep it clean every oil change clean it in my state ,ok your suppose change ppr filter every 6 mo. its very windy dusty here also keep those pcv vales changed you can evn use chemtool an not change but once a year tht is biggest overlooked thing bc it has to mv freely the lil bb if get clogged kills mileage so if fairly new at oil changes spray an cleanw chemtool spray good hunting,also idc who says if you run highest octane you dont have to push gas pedal as hard,so mpg mk up for cost i was amechanic for chevrolet i can tell you low octane gas hard on valves so if not believe me try hi octane an youl see my dtr jus bot new car an they told her only run hi octane so im telling you itl save lifter issues an even a dog car will last longer w 91 octane

I have one in a 2008 Nissan Titan and the truck is still running strong at 330,000. I put in the truck at 20,000 miles and serviced the filter every 50,000 as called for. Gained about 1.5 mpg.

K&N filters do make a difference. I have always used them (45 years) in 10+ different cars and trucks and always feel a more responsive throttle. I have also inspected the throttle body and intake, no signs ever of dirt or contamination. To the guy calling people idiots... There is a reason racers use these and not paper garbage. Your oem speakers are garbage too, we upgrade those too, because after market is superior. Same thing with air filters. I raced motocross for years, used the same style filter as K&N, because I liked winning, and the engine was never damaged.

Only thing a lay person can do is compare fuel consumption under same conditions. Cupla extra K's to a tank adds up. Whatever ya gain in KPL, ya gain in power. Depends how ya use it.