DNA Air Filter | Installation and Review | Royal Enfield Classic 350

Today I will install the DNA performance air filter stage 2 on my Royal Enfield Classic 350 Reborn. This is my first performance modification on the Classic 350. It is very easy to install, but is there a difference in performance?
Let's find out!
My vlogging gear:
⚡ Insta360 Ace Pro & Ace: store.insta360.com/product/ac...
⚡ Insta 360 X3: www.insta360.com/sal/x3?insrc...
⚡ DJI Mic: amzn.to/40L9Z0h
⚡ DJI Osmo Action 3 Adventure-Combo: amzn.to/3MSNQaD
⚡ DJI Osmo Action 4 Standard-Combo: amzn.to/3RGVOq2
⚡ Osmo Action-4 GPS-Remote: amzn.to/3v16eI6
Please follow me at:
✅ Instagram: / marcstonesmoto
❤️ Thank you for all the support! Sharing my videos, commenting and liking the videos I truly appreciate it :-)

[@giorgiosantangelo4916]

Thank you Marc! Very nice and useful video! I will make the same mod to my Classic 350. Happy 2024 🎉

[@Marc.Stones]

I wish you a wonderful 2014 and ride safe. 🎊✌️

[@gtan431]

Hi Marc....gr8 video thanks...check out mine here in the tropics....

[@martinkhasar]

With the new filter, turning the throttle sounds like a growling tiger.... Love it!

[@BulletBeena]

Thanks for this review Marc. I read a lot about people fitting the DNA filter and saying that it didn't really make any difference other than the noise increasing. I feel that you always give an honest opinion in your videos and trust what you say, so I bought one and fitted it to my Bullet 350 yesterday. Got a chance to try it today (it rained all day yesterday) and it makes such a difference! The throttle response is much snappier and the engine feels a lot smoother. The extra growl from the intake noise is nice too. I'm going to add the Hitchcock's decat pipe next month as well to get that air flowing nicely.

[@Marc.Stones]

Sounds great, let me know your experiences of the decat pipe after you installed it 👍

[@BulletBeena]

@@Marc.Stones Will do 👍🏻

[@tweedelidee]

The very first modification I made on my bike. The throttle response is much much better in my opinion. Thanks for posting, Marc - and a Happy New Year to You.

[@Marc.Stones]

Happy new year to you too and ride safe.

[@pauleedeehimself8489]

I keep getting 'check engine light' after fitting DNA filter. Any idea what I can do?

[@lorywlf]

@@pauleedeehimself8489I can’t help you regarding your issue but you can hear the bike doesn’t run well at all with the DNA filter. I used it for a few days but the first quarter of the gas is really inconsistent, blipping got very difficult cause it runs lean and sometimes it turned off while blipping before a stop. It also lost a lot of engine braking. The sound with the filter is lovely but for the moment I feel it has too many downsides

[@jez6208]

I found exactly the same result. Worth every penny. 👍😊

[@Butlers_Bike_life]

The best modification for any Royal Enfield bike, excellent video 👍

[@shantanusinghmertia7617]

The sound is definitely better than before ❤

[@curtis164]

Great video, thanks for the infos 👍🏻👍🏻

[@MACO60]

Good modification for the Classic 350

[@ElwoodPDowd-ed7pc]

I may make the same upgrade to my little Hunter, thanks for sharing!

[@dimitrisg.4504]

Marc, now the Hunter is a true CLASSIC!! I think, it breathes more, so running better, leading to an overall engine life extension! And of course, a better, classic sound! (P.S. don't forget to wear your ear plugs).

[@Marc.Stones]

Absolutely, gets a bit louder now, so ear plugs are welcome :-D

[@strangeguest]

Nice and useful video, keep it up Marc 😍

[@Marc.Stones]

Thanks ✌😎

[@pucheddal4106]

Hallo! Wieder ein informatives Video! Werde den Filter bei meiner Classic auch installieren. Gruß Erwin

[@Marc.Stones]

Hallo Erwin, frohes neues Jahr! Ist auf jeden Fall das Update wert 👍 Viele Grüße Marc

[@Lee-70ish]

Good vid Marc. First thing I did on my 350 classic . Bit noisy but In my opinion has made the bike breath way better, and as a plus Its worked out that the cleaning kit will service the filter twice if carefully used. Which is cheaper than buying two new OM filters. So for me its been a win win. Happy New year mate. Lee🍻

[@Marc.Stones]

Hi Lee, happy new year and a great 2014 🎊🎉 I am also quite satisfied with the air filter. Hope the fuel consumption stays the same. Cheers Marc

[@fishbad13]

Thx for vid, filter is waiting for install now 👍

[@ChancellorBeeHaw]

waiting for my own to arrive :) your glowing review has set my mind at ease.

[@Marc.Stones]

Enjoy your new RE and have a safe ride

[@ChancellorBeeHaw]

@@Marc.Stones had the bike for a year! the filter is what I'm waiting for :)

[@MsDenver2]

Hi watched your video again as I’ve just bought the DNA filter for my classic 350 , it was expensive but worth it , i watched just to make sure I know how to fit it and you said it’s easy. Your bike definitely had a deeper sound and more raspy thankyou 👍🏍️

[@ShekharPachauri]

What about your experience? How does your Bike sound now? Has the bassy note increased?

[@MsDenver2]

@@ShekharPachauri well I haven't put it in yet as I've been ill but will let you know what I think ? But yours sounds 👍

[@silkycherry]

I will definitely do this upgrade to my Classic 350. You can notice the difference in sound and performance. 👍

[@Marc.Stones]

Yes, it is absolutely worth it. 👍

[@lorywlf]

Beware, the bike will feel a lot less smooth at low revs and you will lose a lot of engine braking.

[@Sidhu_classic350]

I have ordered mine from Hitchcock and the gentleman did advice me to ride the bike for 15-20 minutes and go through gears instead of leaving idle so ecu can reprogram itself. Also if anyone is adding a decat pipe and silencer the ecu can cope but if cams are changed then need fuel x! 👍🏽

[@Rallistatos]

I know about the 12 minute tune that i used in some of my Triumphs so far but i didnt know that the same thing works on the classic. Is it proved that it helps, does any manual reccomends it? I have ordered a dna for my 350 and didnt want to intervene in electronics with a fuel x. Thanks!

[@londo0]

If you are installing a DNA filter and better airbox, you need a straight through exhaust as well to get all the benefits. More air comes in through DNA filter, so you need straight through exhaust so gasses escape quicker.

[@Marc.Stones]

Thanks for the tipp 👍

[@rogeliosantamariaortiz1653]

Excelentes videos amigo!!! ✌🏻 Espero en el futuro puedas hacer alguna reseña sobre si hay algun cambio en el consumo de combustible con el Filtro DNA. En una semana llega mi nueva motocicleta Classic 350 green halycon, estoy muy emocionado. Saludos desde Monterrey, México!!! 🇲🇽

[@Marc.Stones]

Gracias. Por supuesto, siempre depende de tu estilo de conducción y de tu consumo. Hasta ahora no he encontrado nada negativo. Muchos saludos desde Berlín.

[@Sidhu_classic350]

Thanks for the video

[@FoxParasyte]

It definitely pulls harder with the Stage 2. One thing that i noticed immediately was the significant improvement to throttle response and touchiness. Killed a lot of dead spots on my classic and got rid of the laggy response. If you have a temp gun, check the heat coming from that header pipe. If it's blistering hot i would immediately get a Fuelx lite. I showed in my series just how much that device changes the temps from the exhaust alone. Near 400F to 250F (but i have a full exhaust on mine)

[@Marc.Stones]

You are right, I had the same feeling. Runs smoother, no dead spots. At the moment I can not check the temp because we have -5° C in Berlin so the engine runs cool 😂 I already installed the Fuel X, engine runs even smoother, but the fuel consumption is higher. I did a video with an acceleration test with and without the DNA air filter. I checked your videos good work! subscribed ✌

[@FoxParasyte]

@@Marc.Stones You have higher fuel consumption? Mines about the same depending on how spunky i feel that day. I get it, we have 2 feet of snow here in Michigan wind chill -20F. I should have snagged my GPS lap timer thing before i started my videos. But if i do a separate series on a Hunter or Scram at least I'll be covered lol. I subbed as well, take care man!

[@Marc.Stones]

Yes, the fuel consumption is 3.5 L/100km instead of 2.6 l/100km. 2 feet of snow, not the perfect motorcycle conditions 😀 Have a safe ride!

[@avinashcj398]

How best is this when compared with bmc and knn filters cuz the materials usuage is pretty much similar.

[@stevenmiller184]

The word that comes to mind is "Sonorous"

[@quentinbush]

Do you know, you are the first bloke to give a sensible opinion of this air filter. For the sake of £94 in the UK, the DNA isn't worth bothering with for micro seconds and extra noise. I think you will find the FuelX has the same end findings. It may reduce the temperature but not worth invalidating warrantees. My only real criticism is you performed the tests in the wrong temperature conditions i.e freezing cold day rather than normal temperatures. I am pleased I have same a few hundred quid for a change in noise and no significant benefits. My bike doesn't have any engine bumps or lumps in its performance from starting to stopping. The 15 minutes idling is a load of rubbish to reprogram. Information is from a dealership who fitted one of these FuelX kits.

[@user-rd7qu8kk6d]

I have a fuel x on my meteor, it has significantly more power and better throttle response until you get to 60 mph and then you can feel the fuelling going its own way but thats down to the ECU which needs to be plugged in and given new parameters to get the best from the motor as the performance above 70 mph is restricted by the ECU

[@clayfarnet970]

Why does RE put a governor on their bikes and does anyone know how to remove it? I would love one.

[@ayushrana7505]

RE35N21-01 is this DNA air filter for bronze chrome classic ?

[@tushardubey2566]

Hii.. after installation of new DNA air filter any effect in engine like warranty ect..or in piston or internal parts of engine?

[@advaitmane3899]

Hey @Marc.Stones! Thank you so much for this video. I got inspired and did the same installation. However, my only concern is, can I ride my bike without any concern if I do not install the FuelX and a decat pipe?

[@Marc.Stones]

Yes, this is no problem. You might get a bit better airflow if you also install the decat pipe.

[@advaitmane3899]

@@Marc.Stones thank you so much for your response. This surely gives me more confidence now 😁

[@lensmann100]

I wonder if simply changing the cover and retaining the paper filter would also improve the sound/ throttle response?

[@Marc.Stones]

I think yes.

[@davidroberts7490]

Hello Mark. Happy New Year 😊 Which camera and mic set up did you use when you did this road test ?You can hear your voice and the bike very clearly !

[@Marc.Stones]

Hi David, happy new year! I used the DJI Action 4 and the DJI Mic 2. Cheers Marc

[@davidroberts7490]

@@Marc.Stones seems to be a very good set up 🙂

[@kiarashsadigh6342]

Hey Marc... Lovely video! Do you use a different camera for your tripod shots compared to the riding shots?

[@retromotorbikes]

@@kiarashsadigh6342 Yes, I use the Sony A7SIII for tripod shots.

[@uncletom1971]

You should also get the alternative pipe to eliminate the cat from the exhaust.

[@MsDenver2]

Thankyou for your reply, the engine light coming on is that anything to worry about?

[@Marc.Stones]

Maybe let it check in the workshop, it should be off.

[@frankblumler623]

Hört sich schon mal gut an, habe den bei meiner 500er montiert konnte aber wetterbedingt noch nicht fahren. Mich würde mal interessieren welche Jacke du anhast und wo du sie gekauft hast. Gruß Frank

[@Marc.Stones]

Das ist die originale Royal Enfield Jacke, habe ich bei Ebay gekauft. Viele Grüße Marc

[@derfailer3434]

Ist dieser Luftfilter mit dem neuen Lufteinlass in Deutschland so legal?

[@travelwithwolfy]

sir can we do this modification with keeping the stock silencer, I mean does it harms the engine in any sought? like if keep it without any tuning or something, just by changing the air filter

[@Marc.Stones]

Yes, you can keep the standard exhaust. It does not harm the engine.

[@shantanusinghmertia7617]

Can you please do this test again without paper cover on air filter ???

[@PushkarRana07]

Hey Marc just have one question does the filter cause any changes in fuel efficiency/milage?

[@Marc.Stones]

Hi, I could not recognize any difference.

[@MsDenver2]

What about fuel economy is it the same ?

[@Marc.Stones]

I did not see and difference so far.

[@MsDenver2]

Doing these modifications does it put strain on the engine at all ?

[@Marc.Stones]

As far as I know not.

[@pauleedeehimself8489]

With me the 'check engine' light comes on with the DNA filter in place🤷🏻‍♂️

[@georgewilliamlyngdoh1973]

Heard the after market filter dropped the milage. Just wanna know if the fuel consumption is noticeable.

[@Marc.Stones]

I could not recognize any difference.

[@melvincain5012]

Does the new seat feel any better now you've ridden on it a bit more?

[@Marc.Stones]

Yes, it gets better on longer rides. 👍🏻

[@ChancellorBeeHaw]

@@Marc.Stoneswould you say that after a few rides it becomes more comfortable? shaping to you after time? or only better for longer distances? just curious to see if ill be uncomfortable on some briefer trips when compared to the standard.

[@retromotorbikes]

@@ChancellorBeeHaw It becomes softer after a while, I am very happy with the seat now.

[@dceata]

hey wo hast du das baby bestellt?

[@THEENCHANTINGPEAKER]

Hey can we use this filter in standard 350 royal Enfield

[@Marc.Stones]

I don't know if there is one for the standard 350 available.

[@THEENCHANTINGPEAKER]

@@Marc.Stones Hey will you please find something for it I can't find anything yet . I wanna upgrade my bike too

[@Marc.Stones]

www.ebay.de/p/19053084746?iid=234168783522

[@pauleedeehimself8489]

It works. However... it also gave me a motor engine fault😕 Put in the DNA filter and cover (stage 2). Check engine light came on. Reset the error, replaced the standard filter... no more engine light. Changed back to DNA and the check.engine light came back on. Reset the error... and again it came. Changed back to standard, Reset and it stays off. Very disappointed 😞 Anyone an idea what I should do? With DNA filter it runs a lot better... but also gives an error😕

[@Marc.Stones]

I also had the same problem with the engine fail light and had to reset is several times.

[@pauleedeehimself8489]

@@Marc.Stones so what was the end game?

[@bibekjung7404]

KAAVER GOD ALMIGHTY 🙏😊

[@sonnenschein1758]

Is there a difference in fuel consumption, too?

[@omarchavez9790]

x2

[@Marc.Stones]

I have to test it.

[@retromotorbikes]

By allowing more air to flow into the engine, a high flow air filter can improve combustion efficiency, leading to better fuel economy.

[@uncletom1971]

@@retromotorbikesOk, but wouldn't the increased air flow result in added fuel to make the motor run slightly richer? Questsion is then how much more fuel it would take to balance the air-fuel mix.

[@ChancellorBeeHaw]

@@uncletom1971 i think you and the person you’ve replied to are both right! ive heard that it essentially balances out with the richer consumption and new economy. so i wouldn’t say any noticeable difference i hope :)

[@metalhz]

hi I assume you're german, I live in the netherlands. I was wondering if this is actually street legal?

[@Marc.Stones]

Hi, I am not sure about that. I think there is no more warranty.

[@josefuncovsky2274]

"HIGH PERFORMANCE FILTERS" 🧐 I've seen a lot of videos about changing the air filter, they all say the performance will improve. But no one could measure or calculate, only words, only promises.....How much percet performance was increased exactly?

[@Marc.Stones]

Have a look here: kzbin.info/www/bejne/n37Mg36GntqNeK8

[@majtimika]

Dna filter and fuelx do not do anything, without proper engine tune. The engine only uses data from lambda sensors when you idel and are steady on the throttle, and adjust fueling acording to that to lower the emisions, the second you open the throttle it uses pre determined values that are fixed in the map, and then switches back to lambda as the throtle calms. So without real remaping, no filter, exaust, fuelx does not do anything. Filter and exaust changes the sound and fuelx increases fueling when computer is using the data from the lambda sensor so there is les jerkines and stall when acelerating. Been there used it all, not worth the money.