Why Removing Charcoal Air Filters Is Generally A Bad Idea
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Will removing a charcoal air filter increase horsepower? Charcoal filters are designed to capture hydrocarbons that may escape out your intake when your car is shut off. They’re located after the air filter in your intake duct, and can restrict airflow. But how much effect do they really have on performance? I took two air filters, an OE filter and a performance filter, to the test, with and without the charcoal air filter. To measure the differences in horsepower and torque, each of the four filter options was put on a Mustang dynamometer, with multiple runs. A VBOX was used to measure real world acceleration differences. How much of a difference does a charcoal filter make? Check out the video to find out!

Related Videos:
Do Performance Air Filters Actually Work - automobilrevue.net/v/R1M2OW93WHBHZFk

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    • KaibaCorp HQ
      KaibaCorp HQ

      Drinking game: take a shot Everytime he says filter.

      about 3 days ago
    • Abraham Carrillo
      Abraham Carrillo

      Removed the charcoal air filter won the race thanks to that one one hundred of a g.

      about 6 days ago
    • Alpine Gypsy
      Alpine Gypsy

      I'm always impressed by the breadth and variety of content on this channel. I've seen unrelated mods to car reviews that continuously bring up this channel! Congrats good Sir!

      about 6 days ago
    • Jonathan Samet
      Jonathan Samet

      You have to replenish it from time to time by adding kingsford briquettes. A large bag should last the life of the car.

      about 16 days ago
    • Dave B
      Dave B

      Thanks for the info, I was wondering about this today. This test reminds me of people that think using higher octane fuel makes their car perform better.

      about 20 days ago
    • Denis Guba
      Denis Guba

      What he forgot to mention is throttle response. One of the main reasons I remove mine was that it greatly improves throttles response

      about 21 day ago
    • Rick Loc
      Rick Loc

      Try that test in a high performance car or truck!!

      about 24 days ago
    • Marko Bozovic
      Marko Bozovic

      What you say about G forc. With this removed and performance filter(Maybe even cold air intake), with exhoust done, with proper tune. You would gain at least 0.1-0.2G

      about 27 days ago
    • Melina Mobley
      Melina Mobley

      wow... best comparison video on the earth. how come I found this channel now? I subscribed. this channel deserves 10M subs.

      about 29 days ago
    • bobolinkr

      Just replace the filter with a drying sheet... your engine bay will smell sweeeet 😘

      about 1 month ago
    • Don’t de rock me riz
      Don’t de rock me riz

      Very interesting. Speaking of performance filters, I heard those can mess up the MAF sensor because a film comes off the filter & hits the sensor causing the check engine light to come on. Any ideas?

      about 1 month ago
    • Kostas Nls
      Kostas Nls

      What about the weight of charcoal filter?😂

      about 1 month ago
    • Martin Lang
      Martin Lang

      Been there, done that. Used K&N filters before, sure they work, I don’t like the labour time and difficulty getting the bugs out (I’ve tried soaking, hose, degreased etc etc) they get stuck in the pleats and are frustrating to try and clean, so I went back to the disposable factory air filter. I got a remap, exhaust mods and better tyres. That improved the performance to a high amount. The Audi Q7 already had two large area sized air filters, so the design is excellent. K&N was not worth the hassle. Just my experience so save your dough and put it towards an aggressive remap. It will put a smile on your dial.

      about 1 month ago
    • opticalriot

      he is just saying to leave the filter in because he is a tree hugging hippie

      about 1 month ago
    • Guy Clements
      Guy Clements


      about 1 month ago
    • Wes Anderson
      Wes Anderson

      So long winded. Good content but you could do without 3/4 or the explanation.

      about 1 month ago
    • Tyson Cross
      Tyson Cross

      I love the charcoal filter...makes my teeth whiter and skin tighter for all my ig selfies👍

      about 1 month ago
    • fireboltaz

      I run no filter at all. My car runs like a Deere

      about 1 month ago
    • jeppe rasmussen
      jeppe rasmussen

      Try foam filter

      about 1 month ago
    • Adam Amaro
      Adam Amaro

      I saw some claim in regard to a manifold spacer on the the Subaru Crosstrek with gains up to like 15HP. could you do a video on manifold spacers??

      about 1 month ago
    • Dylan Hutchison
      Dylan Hutchison

      should have tested no filter

      about 1 month ago
    • ubangiestomp

      If only Subaru made the Crosstrek with a turbo around 200 HP. They would have an even bigger hit on their hands. Maybe in the future....

      about 1 month ago
    • Gerald

      Fuel economy tests?? That would be more of a reason to do these mods vs the insane acceleration increase

      about 1 month ago
    • Andy Wadsworth
      Andy Wadsworth

      Stumbled across this by accident, but absolutely fascinated by it! Well explained, thank you!!

      about 1 month ago
    • Ian Irizarry
      Ian Irizarry

      removes charcoal filter........ FBI OPEN UP!!!!

      about 1 month ago
    • Gr8 M9ds
      Gr8 M9ds

      What about gas milage? Could there be a benefit in MPG?

      about 1 month ago
    • Stephen Wilfong
      Stephen Wilfong

      Thank you for talking me out of doing this :D

      about 1 month ago
    • ali hamzah
      ali hamzah

      I removed the charcoal and air filters and installed K&N high performance filters on my f80 m3, and I didn’t feel any difference besides the turbo whistle significantly increased and that’s it lol so I think drop in filters is either waste of money or it doesn’t work for some engines like my S55 engine!!!

      about 2 months ago
    • anthony mills
      anthony mills

      20-60mph stock 9.01 vs 8.7 for no coal with k&n. The difference is .3 its a bit like the 100 m olympic race Usain Bolt at 8.7 and last place at 9.01

      about 2 months ago
    • Eric

      The real question... What is the HP gain with no air filter???

      about 2 months ago