I would have never thought be so interested by an air filter présentation... Thanks sir, interesting and informative, as usual ! Hi from Paris.

Extremely well-explained, Stuart. And a great tip regarding idling the engine from cold to normal running temperature.

Great video Stuart. Concise as ever. 👍🏻 I love the irony of doing a video on air filters, and then riding past a couple of huge chimneys, belching God knows what, into the atmosphere.🏭

The best review,the most detailed and the most effective review no one can beat this review. You left no stones unturned Glad to subscribe

Another great video, on a product that seems Necessary! Amazing how manufacturers use budget parts on things that effect performance, a thing I noticed coming from the Harley world, a few quid at the manufacturing stage could add so much enjoyment for the owner. Another great common sence production. Keep up the great work.

If you were my teacher at school... I would have paid more attention. Excellent explanation. I'm test riding one of these tomorrow... can't wait! Been riding 3 years, my current bike is a suzuki gsf 650, but when I saw my boss rock up to work in his new royal enfield, I knew I wanted one... and tomorrow, I may be a proud owner.

A great explanation, Stuart, and very interesting 👍 Andy 🏴󠁧󠁢󠁥󠁮󠁧󠁿

Thank you Stuart. This is a fantastic piece of information that is so important to the performance of the Interceptor.

Dear Stuart, it is always a pleasure and education watching your videos. Keep up the good work.

Absolute delight to listen and watch your videos ! Thanks again Stuart !

I didn't think that I needed to upgrade my Interceptor's air filter. But now after seeing your review I think I'll upgrade.

Perfect timing, it’s an upgrade I’m planning to carry out. So it’s good to see a review beforehand. Great info regarding the ecu. Haven’t seen that mentioned anywhere else, so thanks for that. Cheers, Martin.

I can't believe I watched a 15 minute video about an air filter. But it was very well done, and it convinced me to subscribe. I m still on the fence about buying an Interceptor but videos like this are warming me up to the idea that I could live with 45 horsepower.

Neat and exquisite description on the most important aspect of bikes

A rather splendid video descriptive my sir. It’s indescribable, the feeling of passing molecules onto the combustion chamber. Why would anyone someone suffocate such a power house

Hi Stuart. Hitchcock superb service ,ordered filter and mirror plugs yesterday ,today all fitted run for 13mins then few miles around the town ,sounds great. Job done next Thanks to your videos 👍

Stewart, as a result of watching this video, I bought a DNA air filter for my car a Kia Picanto 1.25cc to replace the stock airbox filter. I wasn't expecting any performance difference at all, I just liked the idea of the long life of the product. Now I know that you are an honest and sensible guy, so I trusted your opinion and I am so glad that I did!. The filter has made a very noticeable improvement to the torque and runs more freely, the engine is more relaxed and copes with any situation that I ask of it!. The fuel economy has improved, acceleration is quicker, it really does feel like the car has had a larger engine fitted!

Thanks. This is a no-bullshit channel. No hype. Very helpful. Unique and pleasant accent. Keep it going, I will buy an Interceptor very soon.

Sir, I was just blown away by the incredible amount of information you provided here! This screams of a real passion for motorbike, not just shallow throwing things at it. Thanks so much! I plan to get Int 650 myself, in Bakers Express colors. Would you by any chance adding any leather or waxed cloth vintage travel bags? Couldnt find any online without the need of a massive metal rack. Triumph has some nice looking bags

What a review, you cleared all my doubts about DNA filter.

Great stuff! I’ve always fitted a washable filter to all my vehicles. Pays for itself after a little while, better performance & mpg 👍🏻

Excellent video This is an upgrade that I'd decided to do on my Interceptor when I first found out about this product. I had a very similar setup on one of the bikes I had way back in the day and to be totally honest I didn't fit the filter just for a little bit of extra performance, because the bike didn't need it, I fitted the filter for that gorgeous sounding induction roar. I'm going to fully run my bike in before I change the filter because I want to be able to see what difference it makes.

That sound!! Great video, although finding your channel has cost me a fortune already, and I only get the bike tomorrow!

First class video Stuart, informative and interesting and beautifully shot too, i never thought an air filter could be made to look sexy lol

the best review about dna filter, decided to purchase after watching this. thankyou

Cracking little review, very interesting and informative as usual.

Wish I had seen your video before putting DNA filter in my cb500x. Your advice on initial startup ecu and oxygen sensors very good. Thanks Ted

Okay, now I got the answer of my previous question. I am now convinced to install the DNA air filter to my Classic 500. Thank you very much!

Hi from Argentina! I installed the DNA filter and have the same sensations as you. But you expressed them with the proper words. Thanks for the recomendation of run the engine 12 minutes, to allow the electronics make the necessary changes.

Thank you very much, Stuart! You are truly the treasure trove of information! ATB🙏🏻🍀

Stuart, I like the way you explain things

Thanks Stuart for your full informative view on fitting a DNA filter.

Thanks again, Stuart. You've answered my question about the difference between S&S and DNA filters - they are the same! :)

Another spot on, very good and instructive video Stuart.

Great explanation! I just ordered my kit for my brand new black interceptor 650.

I always enjoy your videos. Very informative

definitely going to have a go at that mod. Cheers Stuart. Always excellent information.

That ECU was very important, thanks. And damn those leather wrapped grips look fantastic.

Very useful vid,that 12 min calibration time is very good to know about.Got 1 ready to put on.

I didn't realise this was how these high flow filters worked Thank you 👍🏻

Great explanation and excellent video. Through and exhaustive 👍🏻

Thanks Stuart! Your video's are better than watching the Telly!

Thank You for sharing the technical know how;

Was waiting for it. 👍

Thanks uncle Stu for the great explanation about the inner workings of the air filter. I've been using the DNA air filters on my bikes for at least 5 years now and I have been happy with them.

That road is amazing!

Fascinating presentation with equally fascinating accent.

Great video, really enjoyed your detailed commentary. So right about leaving the ECU to 'learn' too. I did the same mod a few years ago on a KTM Duke 390, with a K&N filter & my findings mirror yours.

@Stuart brilliant mate and explained very well. Makes a lot of sense

I was sucked into watching your video and now my neurones seem to be flowing more freely!

Just ordered one for the RE Meteor Fireball red. Thanks for the vid.😎

Man what an explanation. Glad I have been subscribed to your channel. Can you also make a separate video on performance exhaust and the combined effect of performance air filter and exhaust on bikes performance.

Thank you. Some really great info!

I’m buying this filter right away after seeing your video @stuartfillingham sir amazing and super informative as always -inwas in 2minds till now but this has clarified all my doubts-id thank you sir for these informative videos and please keep more of such videos -thank you once again!!

Another great review. Thanks,

Well that review got you a lifetime supply😁👍Great review and good advice.

Great info for "rookies." Have a great day Stuart.

Great video Stuart, I hope they do the filter for the Himalayan 👍🏻, and you have an uncanny knack of making my bank account have less and less in it, every time you review something 🤣👍🏻

Excellent video, fantastic explanation, going to fit one to my Super Meteor 650 today. 👍

Excellent Video as always, Mr Fillingham.... Your video convinced me to go with DNA. I thought that I noticed a distinct new "growl" out of the engine after installing my new DNA air filter. Between the air filter and my new mufflers, I hear beautiful tones while riding my Interceptor on the beautiful roads of the Arkansas Ozarks......

Great tip with the retract👍

Thanks for the information

Nice? good? I don't know what to comment. Thank you as usual and I will try to get this upgrade for my INT.

Such an elaborate explanation!!! Excellent.

another superb video/review......how can someone make a video on air filters interesting ? … well you just did stuart !

Excellent informative video. Thanks.

Man, your videos are documentaries hahaha thank you for this and my bike is not even a Royal Enfield

Excellent explanation, thanks...

This is the best video on The subject on the YT, it explains what The Air filter change does to the engine with top much didactics. 👏👏👏

Induction roar on my Kymco AK550 with DNA was enhanced further by fitting a small aluminium louvered cover to the lid above the still air box. This lid is between the riders knees and not hidden/ sound muffled by a petrol tank. A most enjoyable sound further enhance by the Arrow exhaust muffler and 270 degree firing sequence. Brings joy to this 68 year old.

God Bless you and your content.

Very informative, thank you.

Stuart, slightly off topic but there is a very interesting article in the weeks MCN regarding S&S performance parts for the Enfield 650. These include stainless steel exhaust cans and a 865cc big bore kit. Well worth a read.

Hi Mr. Straut, great content and much relevant to us normal riders. I have seen a lot of pistons getting fried because the engine was running lean. Please let us know your comments on long term effect of performance air filters. does learning ecu helps in solving this issue of running lean??

Thanks for your insight

By the way I learned something new today! Thank you!

I recently ordered this with the stage 2 kit- would really appreciate if you can share a long term review..

Touring the USA on my Royal Enfield Interceptor 650, putting in a lot of miles per week it seemed like my life revolved around always cleaning, lubing, and adjusting the chain, trying to keep close the manufacturers recommend intervals 1,000km/621mi, which I can easily do in a day. I really wanted to keep My Royal Enfield stock but eventually broke down and installed the Bandidos Pitstop Belt Drive conversion kit. I love it! Even being very picky to clean off excess lube, after 17,000mi/27,000km it took forever to get it cleaned off all the little cracks and crevices. Plus it is smoother and quieter which I wasn't expecting. The downfall for my use is the gear ratio they use between the front and rear pulleys give more torque, which I don't care about while touring. That also means my gas mileage has gone down. I'm still using the stock paper filters. You mentioned in this video you would be checking for fuel consumption increase later. Did you check? What was the result? What video is it on? Thank you so much for your quality videos!

Top notch! Thanks.

HI Stuart, Love your videos sir and this being my first bike I really appreciate any English spoken content and tips/recommendations. I am definitely going to purchase those 22mm handlebar risers from Motone based on your recommendation (wish you had even a 1% discount code so that you would gain more recognition from that company). I already purchased the tank pads, which were an absolute gem of an addition to the bike ergonomics and control. I have done many snorkel deletions on my vehicles and I always love added roar. My thoughts on this particular subject (mostly curious to my inexperience with bikes) is that sometimes I have read about user error when oiling performance filters. In particular, a user will over oil the filter and this residue will then build up on the MAF (mass air flow sensor) which in return will affect the fuel/air ratio reading by the ECU. Now from my own personal experience (still speaking of applications related to 4 wheeled vehicles) in using K&N filters and applying oil understanding this method... There is always some form or residual that will build up on the inside walls of the intake plastics that will lead to additional cleaning, but with a motorcycle having such a short intake setup; I am wondering if the oil residue would be sucked into a harder to reach area and cause additional maintenance? I always try to find an oil less performance filters, but I think that cuts into companies revenue stream in relation to the oil servicing kits. You mentioned that the rain guard on the intakes are usually installed by the factory keeping in mind to avoid any unnecessary water being sucked into the intake. If I am wanting to ride my bike this winter do you think that it would have any consequences leaving it that exposed when installing this kit? My thoughts are that the main market of the RE lineup being based in India, is that they would also want to keep dust pickup to a minimum. Apologies for any poor verbiage and I wholeheartedly appreciate your great content!

Brilliantly made understood by you to me 👍

Much appreciated Stuart. In the states we have K&N filters available. Quite similar. Added a couple of lower restriction mufflers and the sounds are glorious indeed from my GT650. I very much appreciate your attention to the details and nuances of wrenching on these bikes while delivering your message in poetic fashion. Thanks very much.

ok that does it! I'm not touching my bike until I check in with Stuart first. Thanks Stuart for explaining what I did incorrectly. I purchased the DNA filter a month ago not because I wanted more power but because I used to race off-road and I know the benefit of a high performance air filter for power consistency but also because it's cheaper in the long run to clean your filter instead of replacing it. But, my bikes never had fuel injection and an ECU so I replaced my stock filter with the DNA and rode the bike like I normally do to work. My INT is a commute bike and so it rode fine to work, but later in the day when I started it to go home, it wouldn't idle and it was very rough idling when I got it to start. I had to be careful on the way home to not let the revs drop below 3k or it would stall. When I got home I thought I must have done something wrong so I removed the filter and put back in the stock filter and left it that way for about a week. I then thought that was crazy as this must be working for others so I decided to trouble shoot it. I put it back in and started the bike and I must have gotten dumb lucky as I let it idle while I looked around. Of course there was nothing I could do so I didn't change anything but after a few minutes it seemed to be idling just fine. So I then took it out and rode it and stopped it and let it sit, and started it and rode it and everything seemed to be working properly. I then went back to commuting with the DNA installed and it's been great since. I agree that there really isn't anything noticeably different, but I wasn't expecting anything as my reason to install it is for better long term consistency and for a less costly maintenance. Thanks for the great write-up again!

Hello Stuart, nice and detailed to the core videos u give us all time, keep up the good work Bro... would NGK iridium spark plugs replacement to Interceptor give any visible performance enhancements... please shed some light... Thanks very much

Hi Stuart, I love your very informative and exhaustive videos 👍🏻. I need a clarification though. Isn’t the stage 2 kit meant to be used with free flow cans? Or can we use the DNA air filter along with the stage 2 kit with the stock exhausts without any heating or engine issues.

S&S filter and plate ordered. No DNA I. The states I could find. Nope don't have 100 miles on this motorcycle yet. Going to change the filter at my first service. Looking so forward to it though!!! Love your videos!

Great video thanks and take care

This is one of the first Mods that I did.....

Great video...excellent explanation

I don't know... Have seen fine particles and fine dust on an intake (clean side) personally on oil cotton filters... Mind you this was on cars.

Love your vids , am 74 and worked my years in the industry , meaning incredible long rides for vacations on many different bikes , started on the first hondas than came to Canada a cub trail 50cc and ended with a Ducati my riding love affair . The desmodronic sound gave me biking orgasm

I have just installed the DNA filter on my Classic 350 (2022) and the performance is absolutely better. Sure it did not turn into a race bike but the ride is a delight even more so than before. I recommend it 100%. One note though: at least from my experience, the 12 minute idle run after installation did not do anything. On The first ride after installation, performance did not feel better and actually felt a bit worse than before, which was disappointing. I thought that’s the end of it. However, during my rides on the following days the engine felt better and better, like it’s “learning” during actual rides rather than running on idle.

Totally agree, fitted the DNA filter to my XT660Z Tenere and the best improvement is the 'characteristic' change..more important than HP figures. You are aware the engine is breathing better. A DNA filter and free flowing exhaust will make a big difference to the 'way' a bike rides. Cheers, Steve

Loving the Interceptor series Stuart - great work. What are your thoughts on exhaust wraps? More aesthetics than anything else or does it add some performance value?

Increase in torque is increase in power. Torque times revolutions equals power. One should maybe claim that not the >maximum< power is more, but the power over the mostly used rev band.

Bloody good video!

Hey Stuart, what’s your take on using this type of free flow filter with stock exhaust? I am not looking for any major power upgrade but always liked the idea of things being more smoother. Will the engine be affected in anyway if I use this with stock exhaust?

Hi. Great video. Can you talk about the seat perhaps?

Hi Stuart very informative video's, thanks for your effort. could you do a video on cleaning the filter as most of the ones I have watched on KZfaq show cleaning the outside and these on the interceptor draw the air in from the inside. Tim

Appreciate the video. Trying to sneak the S&S slip-ons past the missus for my new RE GT 650. Clearly, I also need to get the S&S (DNA) air filter at the same time. Bugger. ;) Fitted the S&S air filter last night... ;)