Free flow DNA air filter setup, worth it? Dyno test, 350 Royal Enfield Hunter, Meteor, Classic

Using our Royal Enfield 350 Hunter test bike, we carry out some dyno tests to see what effects the fitment of the DNA Combo kits have against the standard air filter setup. Results are measured on our chassis dyno showing a before and after fitment in the same conditions. All kits are available through our website on the links below:
350 Hunter DNA filter kits:
accessories.hitchcocksmotorcy...
350 Classic Reborn DNA filter kits:
accessories.hitchcocksmotorcy...
350 Meteor DNA filter kits:
accessories.hitchcocksmotorcy...
650 Super Meteor DNA filter kits:
accessories.hitchcocksmotorcy...
650 Interceptor/Continental GT filter kits:
accessories.hitchcocksmotorcy...
411 Himalayan/Scram DNA filter kits:
accessories.hitchcocksmotorcy...

[@stevenmiller184]

You folks at Hitchcock's provide an incredible service to the Royal Enfield owner community. Thank you for that.

[@HitchcocksMotorcycles]

Pleased to hear, thank you for the kind comments

[@MichaelJones-zx9kf]

I have fitted this kit and the real world difference is significant. Extra punch when going up hills, generally gets up to the national speed limit quicker and overtakes are possible where they may not have been previously.

[@freeman10000]

My experience exactly.

[@johnrocker2986]

Without more fuel your not getting more performance it's simple physics or a placebo effect.

[@krzysieefadg9283]

@@johnrocker2986 the reaction to the gas may be a little better, I once did this type of conversion in a moped called a ranger classic, I gained a better reaction when accelerating, having a 72cc set

[@johnrocker2986]

@@krzysieefadg9283 your machine was not restricted by any ECU this decides when the fun starts and ends and modern machines without a remap will not alter performance

[@bryanbrowning5746]

@@johnrocker2986from what I understand, after replacing the filter assembly, the engine should be idled for 10-15 minutes. This allows the airflow sensor to adjust to the increased airflow, which is done by the ECU, and confirmed by the oxygen sensor. This is a remap of the ECU. The limiting factors are the output of the injectors, and the flow of the exhaust. I’m thinking that the engine in stock state of tune, may have that extra 10% available with just the air filter mod. Beyond that, a longer duration cam, modified exhaust, and higher output injector would be necessary. But I’m sure that improved throttle response would be the main benefit of this kit.

[@josefuncovsky2274]

I've seen a lot of videos about changing the air filter, they all say the performance will improve. But no one has been able to do any measurement or calculation, only words...... HERE IS FINALLY SOME MEASUREMENT, THANKS

[@richardcrighton8079]

i have done the whole thing: DNA, fuelX, freeflow pipe AND the performance cam. it's a keeper this bike and i'm gonna squeeze every ounce of pleasure i can from it. Roll On RE.

[@HitchcocksMotorcycles]

Sounds like a great combination, enjoy.

[@saifsheikh1195]

How did you do the straight pipe?

[@WillysHellToad]

Try with NGK IRIDIUM

[@rudyberkvens-be]

But does it run faster?

[@vaibhavverma2960]

is it worth it

[@OddSpanner]

Excellent, well explained and shown. Really useful video! Thanks

[@GlynOC]

Going over to your site to order now, thanks for the video. Hope it goes well with my shortened Meteor exhaust

[@melfzs]

I've fitted a Hitchcocks filter plate and a decat pipe on my classic 350 and the difference is very pleasing 👌

[@GrampsD63]

I installed one on my Classic right after the 300 mi. service. Sure love the intake roar.

[@scottboettcher]

All my parts/accessories come from Hitchcocks! Get most items in ~4 days to LA, CA. Great service, and great parts selection. Ride Safe 🙏🏼

[@chathamabs2011]

Very clear and informative video. HNTR arrives next week 😎

[@apox5308]

DNA filters are excellent. Used them on all my motorcycles and noticed a less restrictive acceleration each time. Currently use one on my ninja h2 sx. you can service and clean them easily yourself using the cleaner and oil kit which costs next to nothing.

[@scottboettcher]

The DNA kit + the Hitchcock's decat pipe, make a nice combo. And for sure, I feel/hear the diff! Worth doing - all three of us did that to our 2022 Royal Enfield Classic 350

[@sunaina3921]

Hey @scottboettcher - How loud is the bike now with the DNA kit installed? I am a fairly laid back rider but looking for some more open road oomph. Would it wake up the neighbours when I start the engine? And does it bother you enough to have to wear earplugs? Thanks!

[@quentinbush]

I agree with 'sunaina3921' the sound of a throbbing single cylinder over a multi cylinder Honda is much more head turning and people love them.

[@MagicRoosterBluesBand]

I put the DNA filter kit on my Meteor 350 and the performance is much better; can climb hills faster and hit top speed quicker (75mph). It is louder when you open up the throttle, but about the same noise as stock when idling.

[@keithwaterhouse2845]

I had a look at the specs and it appears the greatest gain in airflow is from changing the retaining plate. The filter element is a major outlay for the little extra it gives.

[@derekgrant2324]

Agreed. I'm going to just get the plate and call it a day.

[@megamind5774]

​Hey there, what mods have you done as of now? And any issues so far? ​@@derekgrant2324

[@Samurhigh]

Is the dna plate gonna fit the stock filter?

[@megamind5774]

@@Samurhigh Just cut a hole in the OEM filter cover and let it idle for 10mins it will do the same thing as dna one

[@megamind5774]

@@Samurhigh Just cut a hole in the OEM filter cover and let it idle for 10mins it will do the same thing as dna one

[@Dfc78uk]

Thanks for the video, is there any chance you could test it with the fuelx as well? I felt the biggest difference after fitting the fuelx lite, already had the DNA airbox cover.

[@Butlers_Bike_life]

I fitted a DNA filter to my Super Meteor 650. The instant most noticeable factor was the throttle response which was so smoother and accelerating especially in 5th and 6th gear from a low MPH there was no need to keep changing down a gear to get throttle response. The added noise was noticeable but became normal after a few miles. Undoubtably the best mod I could have bought from you for the Super Meteor, money well spent 👍 Also with the new 20MPH laws here in Wales the bike is easy to ride at lower speeds !! Great video 👍

[@ddmytrenko]

Placebo works as expected LOL If you fit high flow filter w/o any fuel mixture tuning (which you cannot do easily in Euro 5 bike and you have Meteor 650 which is E5 :D) than it goes actually way leaner and I do not know where your imagination gets that "smooth throttle". The bike instantly becomes "ill". I am living near the mountains. And each time I went up there I had "engine light" ON. The only easy way to fix the problem and to really feel the difference is to buy Fuel X Pro E5 and use at least 5th map on it. Or to sell your E5 bike to another placebo adepts out there and get yourself easy tunable E4 one instead :D

[@MagicRoosterBluesBand]

@@ddmytrenko So the dyno test is lying and you're telling the truth? LOL

[@ddmytrenko]

@@MagicRoosterBluesBand show us the charts then 🤓 I cannot understand why easy fueling questions became magic for 9 out of 10 guys 🤷🏼‍♂️ Easy as fck. If you are letting more in you must also have a possibility to burn more. So, if you let more but burn the same - you will get nothing except leaner mixture and higher combustion chamber temperature.

[@MagicRoosterBluesBand]

​​@ddmytrenko have you even watched this video? Lol Yea it may run a bit hotter, but i haven't noticed it. All i know is it has has more power in lower and mid range. The dyno proves it. End of story.

[@mrvmermoto4725]

Good to see the engine on a dyno, but come on guys, you didn't show any AFR info the most important aspect of tuning. What we really need is this airbox mod, an open pipe and an AFR corrected remap. Surely that can be done? OK, the ECU is locked but that doesn't stop any of the thousands of other vehicles being remapped with the right tool. I bet this engine could achieve at least 2-3hp in the right hands and the speed limiter removed. We don't want 90mph, just smooth torque up to 80mph tops with easily reached 70mph cruising. 😀👍

[@mikeadams6031]

Don't forget to tell your insurance company about the mods or you run the risk of not being covered in the case of an accident. They will jump at any excuse to deny liability.

[@IndianaCarrollski350]

Seems a lot of money for what you get!?! Looking at the video I think it would be possible to retain original air filter but modify the air filter cover to allow more air through??? To be honest I'm quite happy how my meteor is ad standard

[@bencluroe4183]

Exactly what I did. It’s FREE!! Drill a hole in the middle mate 😂

[@johnDukemaster]

Yep, remove the snorcle bit and the "pipe" facing the filter. When that's said, the shape of the DNA lid makes a difference. Actually more than one thinks. So try to make the edges rounded in, towards the filter.

[@quentinbush]

Run it without any filter but keep the cover. The risk of harmful particulates is nil as they have to go uphill and round corners and all from the intake of a single cylinder low revving 350cc engine.

[@timolanteala-brown9608]

Fancy doing a dyno test with filter and fuelx lite? I've bought them from you chaps already but it would be nice to know

[@kevindarkstar]

Would be interested to see what difference the holy trinity of upgrades for the J-series engine in the form of a de-cat exhaust system, dna performance air filter and cover and the fuel X lite or pro would be

[@quentinbush]

I have been informed by an expert that these fuel X ecu's are not worth bothering with and especially the pro version. If we need more speed or power, buy a bigger bike.

[@Flashdan100]

The biggest improvement is changing the intake plate which is relatively cheap, the filter on the other hand is £65+ ! I once read that fitting a performance filter is only beneficial on a highly tuned engine which the Enfield isn’t !

[@georgewylie9674]

I am trying to decide if I am leaning towards a Hunter or a Classic 350. Are there any plans to come up with a free flow pipe for the Hunter 350? Is the Hunter 350 Cat in a single pipe or a separate pipe like the Classic and the Meteor? It would be great to have a free flow pipe to complement the Enfield Precision Free Flow silencer.

[@zombiehunt808]

Always amazes me why manufacturers don’t fit these as standard.

[@steveoswin6084]

Hitchcocks, could you please develop a decat downpipe for the hunter , thanks

[@davidcann8788]

It would have been interesting to test the DNA filter with and without the stage two cover. I wonder what the individual contribution each one makes.

[@csc-photo]

And the stage 2 cover with the stock filter

[@Sidhu_classic350]

Do you recommend fuel x with filter plate and decat? Or do you recommend any set up for classic 350 2024

[@gerdenshed]

I just fitted the DNA filter to my 350 Meteor and I have to admit the increase in noise made me feel like a teenager with his first moped with the baffles taken out. It's a shame. I may have to put the original snorkel back on, I find the excessive noise embarrasing.

[@bundiq]

Thanks a lot mate! That’s the information I was looking for! Stack sound is already a little bit loud for me, so I’ll probably let dna go…

[@gerdenshed]

@@bundiq Not only is it noisy, it makes no appreciable difference to the performance despite many reviews to the contrary. Save your money that's my advice. Mark.

[@MagicRoosterBluesBand]

I put the DNA filter kit on my Meteor 350 and the performance is much better; can climb hills faster and hit top speed quicker. It is louder when you open up the throttle, but about the same noise as stock when idling.

[@davespruce4362]

👍 I've fitted the kit as well and the difference is noticeable. Much more willing to rev and significantly more pull when going uphill. Worth every penny. Thanks to the guys at Hitchcocks for being helpful and honest whenever I have dealt with them. Now, how about a trials kit for the 350 reborn 😅

[@georgewashington687]

I am looking at a 350 Bullet or the Classic, I can't decide which. Is it simply a question of looks or is there more involved? Does Hitchcock also have a larger cylinder to increase the displacement to match the 411 displacement bikes? I did own an old 500 Bullet but that engine required a lot of attention and this new 350 will hopefully be my keeper.

[@matthewashley8298]

I’m thinking of getting one for my Hunter , but will it affect my warranty??

[@HunterVlog350cc]

so it improves the grunt and pickup by around 10 percent , can you also suggest better disc pads to i prove stopping bite?

[@EdgeMasterPro]

I added scented pads Tim to my hunter definitely improved the front. The back was probably a waste of money. Could’ve just left the organic pads on there probably preferred the organic pads.

[@HunterVlog350cc]

@@EdgeMasterPro thanks for the feedback

[@art3mis471]

Can you make a video of How to reduce or fix the tappet noise of the JSeries engine? @hitchcocksmotorcycle

[@derekgrant2324]

What I would GIVE to have THAT happen -- lol. People routinely ask me "is your bike okay? The cylinder head sounds horrible". I'm like "Yup, that's just how awful they sound". lol.. It's a horrific noise, even for a thumper.

[@skaraborgcraft]

Have you fitted an uprated cam to this machine yet? Seems to be a worthwhile job on the classic, dont know if they shared the same cam profile originally?

[@HitchcocksMotorcycles]

The Hunter shares the same standard camshaft as the 350 Classic, and fitting the stage 2 camshaft will give very similar performance improvements across the whole 350 J platform range.

[@1954Antony]

My concern would be what effect any oil mist sucked in from the filter could have on the airflow sensor?

[@dannyvan5792]

is that 5 miles more at top speed ? from 0 to 65 miles 5 sec les ?

[@scannaunderscore1]

It's disabling the speed limiter that I'm interested in

[@karlsquire8148]

Over 10% increase just from a performance Air filter hmmmm🕵 That sounds good and I'd like to believe that, I would still have a hard time believing that if the mundified the exhaust as well, however I'm use to working on bigger engines so maybe smaller ones react differently, just my thoughts and trust me I don't know that much so don't take my word for it.

[@seanmack4552]

I think it just shows how restrictive the original plate is mate, they do it to meet epa and sound laws across the world. So if some countries are very strict that’s what they go with, rather than making different plates.

[@icedidi]

I'd love to do a blind test for one of these Enfield owners, some of the comments suggesting it makes overtaking more viable etc - I'm not convinced, surely a NA engine's air intake is governed by the timing? It can only suck in so much air, as part of a cam rework etc - maybe.

[@MagicRoosterBluesBand]

I bought the DNA kit and had the same thoughts. But it works! I put the DNA filter kit on my Meteor 350 and the performance is much better; can climb hills faster and hit top speed quicker (75 mph). It is louder when you open up the throttle, but about the same noise as stock when idling.

[@anthonybrown4874]

Given that these modern ecu monitor and self adjust would the video not be improved by pointing out that a period of time idling will allow the process to take place? Otherwise a giid vid and eady upgrade.

[@MagicRoosterBluesBand]

Cold engine, start and let idle 15 minutes. Done.

[@allanb52]

What about fuel consumption, I have heard that the news there is not good?

[@georgewilliamlyngdoh1973]

What about the milage? Is it noticeable?

[@livebeyondlines1624]

Can I use Dna Stage 2 filters with stock exhaust for my Classic Reborn ?

[@HitchcocksMotorcycles]

Yes, the DNA stage 2 is suitable to use with the stock exhaust system on the 350 Reborn.

[@chrisdom16]

Does it change fuel consumption? If yes, how much? Thanks in advance for your answer.

[@MagicRoosterBluesBand]

Little to no change.

[@sammorgan7606]

Couldn’t you just cut the snorkel off the cover, Burt Munro style. Same thing right?

[@MagicRoosterBluesBand]

Good luck with that.

[@turboslag]

I love the look of the Hunter and would buy one tomorrow, except for one thing, not enough power!!! Has anyone done the filter, exhaust, cam and ecu and done a rolling road test with the power number? If 30 bhp or close is possible, I'd pull the pin and buy one.

[@derekgrant2324]

Some have, (done all 4) yes. But the power difference is usually just about 10 hp from what I've read.

[@quentinbush]

I know what you are saying, reaching 30HP is far too ambitious. Hondas latest 350cc scooter only has 28hp at 7,500rpm where the 350 Enfield is 20hp at 6100rpm.

[@turboslag]

@@quentinbush I was thinking that the new Triumph speed 400 is 40bhp, then it might be feasible to poke the Enfield up to 30, even though it's air-cooled and just 2 valve. Even if that was possible though, the cost is looking prohibitive, and it's making it close to the price of the Triumph anyway. So the common sense choice has to be the Triumph, which has a better spec, handling and suspension. Ultimately, for me, 20bhp just isn't enough.

[@quentinbush]

@@turboslag I sat on the Triumph 400 speed, it felt exactly the same height and width as the Enfield, much softer rear suspension but only a side stand. I liked its service intervals being every 10,000 miles through being water cooled. It requires higher revs for the torque when the Enfield develops it earlier and is more forgiving through the gearbox. The Triumph comes with good reviews but speaking to a Triumph owner 'they' said they have had issues with Triumphs unlike nothing with the Enfields. The Triumph does look a nicer motorcycle but costs quite a lot more. At the end of the day, it's what you prefer.

[@advaitmane3899]

Hey guys! I wanted your opinion on installing only the DNA air filter (without fuelx and a decat pipe) on my classic 350 reborn. This won’t affect the engine negatively, right?

[@derekgrant2324]

Wouldn't hurt at all.

[@TheHk500gt]

For Meteor 350 the increase is just " DNA Increased Air Flow: +4.82% " so buying an air filter is a waste of money.

[@Vicezz]

Do you guys send to brazil?

[@ontheway4034]

Does the bike automatically remap itself or do you need to do something?

[@csc-photo]

After installing any mod to intake / exhaust, start and let bike idle for 30 minutes. * Do Not Touch Throttle * After turning bike off, wait 1 minute before starting / riding again. Begin this process with completely cool engine of course.

[@AlbertDongler]

I 3D printed my own 🙂

[@Legionrider]

How ?

[@AlbertDongler]

@@Legionrider With a 3D printer I own.

[@user-rb3fg8eu2i]

can you send to me a file?

[@MagicRoosterBluesBand]

But you're still using a paper filter. You're half way there.

[@billmillar8148]

thanks are you going to fit cam upgrade and do a dyno run

[@albion1949]

There's already a video of that.

[@HitchcocksMotorcycles]

Hello, you can see the dyno graph for the cam upgrade on our website against the item itself, please see the following link: accessories.hitchcocksmotorcycles.com/accessory-shop/cylinder-head/48439

[@yashrd2381]

Hi thanx for ur advice... Just need to ask if I install this filter, do I need to replace stock engine oil to good performance engine oil ?

[@HitchcocksMotorcycles]

There is no need to fit any sort of performance engine oil to this engine.

[@yashrd2381]

@@HitchcocksMotorcycles thank u so much 🙏🏼

[@pradeepkummu1917]

👌👌👌👌👌👌👌

[@DJPTEXAS]

Is there a problem with water getting in as you eliminate the snorkel cover ?

[@IndianaCarrollski350]

Good point!!

[@DJPTEXAS]

Thanks !@@michaelmurdock4607

[@rahultejarthur4941]

My doubt too

[@REClassicFIN]

Is your test done with stock exhaust and cat still in place?

[@HitchcocksMotorcycles]

Hello, yes, the bike is completely standard for this test including the stock exhaust system which has the cat in place.

[@REClassicFIN]

Any torque numbers available?

[@brendonhughes4580]

I am seriously considering buying this filter kit off your selves but do i risk water entering the airbox if ridden in wet conditions and will it make the fuel air ratio even leaner than it all ready is thus making it run hotter, can anyone answer these questions 😢

[@derekgrant2324]

This is the only issue I have, despite having installed it anyway. It's a hot + lean running engine, and I'm on the highway way more than I'd like to be. I wish there was a way to cool it further, even if it means remapping for speeds above 50mph.

[@MagicRoosterBluesBand]

@@derekgrant2324 I use full synthetic Motul 15-50w oil. Seems to help. Maybe change to a 16 tooth front sprocket for highways?

[@derekgrant2324]

@@MagicRoosterBluesBand I did that like 4 months ago. Helps bring rpms down by about 400 rpm. Fine for cruising at 55mph, but above 60-65 it's still high (5800 at 65 I believe). I ordered a new smaller sprocket for the rear (2 teeth down) to basically get it to a point I want it to be at. NOW... disclaimer incoming: I KNOW that it doesn't reeeeeally have the power to push both of those, or at least, so they say. But I'm going to do it when it comes in and see how it is. I've got a Greenhorn ride from LA to Yuma, AZ coming up, and I'm sure they're all going to take the highway.. so I truly cannot burn this little engine up 500 miles from home just trying to maintain 65 with everyone else (who I know will be doing 75+). Poor little thumper just wasn't meant for this, but it's all I have at the moment.

[@marvinwilbur9903]

will the dna filter lean out the motor....any carb adj. to be done....

[@SydMaven]

Why do you think it has carbs? Fuel injection. And engine management should take care of fuel mixture.

[@andyclapham4688]

Clearly a brand new bike. Are you not worried about revving the balls off it, or am I worrying too much about running mine in properly?

[@HitchcocksMotorcycles]

Good question! Whilst some of our test bikes are very fresh looking in appearance, they do go through a running in procedure on the dyno before any proper testing. When running in the engine, the important part is not to "lug" the engine and the dyno use is very kind on it in that respect.

[@stevegresty4181]

Does this make the bike run even leaner than it already was?

[@robedmunds7163]

I would like to know the answer to that as well. Does the efi adjust it out?

[@bryanbrowning5746]

@@robedmunds7163it should, as there should be a mass air flow sensor that will sense the improved air flow and adjust the fueling accordingly.

[@yashgaikwad4218]

Does this affect the normal functioning of the ECU or general working of the bike in a bad way?

[@RoleMaisLongo]

No it does't. When you install the kit you turn on the motorcycle, leave it running for 12, 15 minutes and the ECU will understand for itself what is happening and you can ride it and have fun. But if you remap it in a dyno it will run better.

[@hunterrider349]

​​@@RoleMaisLongowhere did you get the information about letting it idle for 15 minutes, it doesn't tell you in the dna instructions ,do you not think if you should do it hitchcocks would have mentioned it, its just so called Internet/experts saying this, and upto now it's impossible to remap the ecu

[@RoleMaisLongo]

@@hunterrider349 It´s not remap, it´s how the ECU owworks. It checks the exaust fumes and the intake and check the results with the map, if you let it working for some time it will stabilish a better calculation. And Hitchcocks is puting the bike on a dyno. If you don't wan't to do it, you're free. But please serch manual os ECUs, study how they work and you will see who is right. And it´s not impossible to remap REs ECU, there´s no dongle on them, you just have to let the right professional to do it.

[@hunterrider349]

@@RoleMaisLongo people have tried too unlock the Royal enfield ecu and it's been locked so well to make it tamper proof no one has managed yet, I suggest you go on the unofficial Royal enfield community forum, a guy on there called Ad Ben has fitted the dna kit and fuel x on the dyno and the result were it's running very lean at the top end, so no not all ecu's re calibrate

[@bryanbrowning5746]

The airflow sensor just sends a different flow reading to the ecu, which adjusts the fuel mixture. My concern with oiled filters is that fine bits of oil can accumulate on the airflow sensor which can affect its function, and sometimes cause it to prematurely fail. K&N filters do the same thing. I only run the oiled filters on carbureted engines, as that oil won’t ruin the carb, like it can on a hot wire MAF sensor.

[@dannyvan5792]

i think just more manny for ?????

[@hunterrider349]

This only tells part of story, does the ecu recalibrate the air/fuel ratio ?, I would have liked to have seen before and after fueling, I'm concerned with this set up it's going to be running extremely lean

[@jean-jacquesnameche3429]

j'aimerai bien avoir une réponse , car les concessions en Belgique me le déconseil , ils me dise que la carburation sera plus pauvre !!!

[@hunterrider349]

That is my thoughts

[@jonathandeeley6276]

If it was running to weak you would notice a decrease in acceleration, rough running and it would probably eat Spark Plugs. I have the filter kits fitted to both my Meteor 350 and Classic 350. 8,000 miles Meteor and 6,000 miles Classic 350. They do make a significant difference. A company the size and reputation of DNA aren't going to market a product that is potentially going to backfire on them and will have done their homework and testing before releasing to the market.👍

[@hunterrider349]

​@@jonathandeeley6276maybe, but they should have covered it in the video

[@bryanbrowning5746]

The air flow sensor should tell the ecu to adjust the fueling automatically.

[@johnrocker2986]

My biking goes back 50 years and the only way to make more performance is by adding more fuel to create a bigger bang or now days a simple remap. This Hitchcocks 1.5hp upgrade may not be worth the cost involved? I say this as nobody will notice such a small gain on what is a heavy motorcycle and varying climate changes and remember more noise can give false beliefs in performance upgrades.

[@icedidi]

agreed - I think there's more placebo than performance

[@XtalQRP]

I have a Meteor 350 and my commute involves 20 miles of dual/triple carriageway A-roads. Fitting the filter plate gave it more top-end grunt. Acceleration from 60 mph was notably improved and holding speed up inclines or into headwinds was far easier. The bike will reliably hit the limiter at 75mph whereas before this was very wind dependant. That said, if you are a B road Sunday rider I don't think you'll see much benefit. The induction noise is notably louder too.

[@jeremymead8546]

It's the percentage increase that's relevant. 1.5 hp sounds like nothing but a 10% improvement is significant and noticeable.

[@johnrocker2986]

@@jeremymead8546 Placebo effect, you've probably lost weight or had wind assistance?

[@johnrocker2986]

@@XtalQRP I'll say again without more fuel, you'll never achieve more performance the bike is controlled by the ECU and until that is modified nothing changes.

[@premminocha1665]

What about the limited top speed

[@HitchcocksMotorcycles]

The Hunter model does not have the speed limiter, but this upgrade is to improve the acceleration across the range.

[@stevetaylor9265]

Is there a big bore kit for these bikes yet? I can't stand to ride mine. Or should I just sell it?

[@darrenpeters1566]

Not yet but there is an uprated camshaft... kzbin.info/www/bejne/pqa6Znlmpt9pZ6M

[@SydMaven]

Why did you buy it, knowing how it performs?

[@enfield7123]

I have a Enfield intersepter i don't have a DNA filter and my bike runs fine..

[@timolanteala-brown9608]

However it makes my hunter 350cc more responsive

[@the.communist]

Lovely bike but RE should have made this bike at least be able to go 120kmh

[@julianroberts7116]

I test rode a 350cc Classic recently. It did 75mph on the motorway, that's 120kmph. The ECU stops it going faster. 👍

[@johnrocker2986]

@@julianroberts7116 why waste money on filter kits if speed is restricted by the ECU, why has nobody found a way of remapping the ECU.

[@julianroberts7116]

@@johnrocker2986 Hiya. It sounds like the filter kit gets you to the top speed quicker, so if you do want a bit more pep from your bike it might not be a waste of money. As for why nobody has worked out how to remap the ECU, I bet someone somewhere has, but I haven't heard about it. TBH these aren't meant to be fast bikes - if speed was very important to you I'm sure you'd buy something else anyway.

[@johnrocker2986]

​@@julianroberts7116I agree with you.

[@quentinbush]

We are not talking jet turbine air inputs here, the risk of picking up any damaging particulate matter to get into this engine is nil. If riders are really worried, fine legging covering the hole will suffice. Very small particulates will not damage this engine as some 'high performance' engines have straight through venturi. The absence of an air filter will increase its lower end horse power and is a saving of £94. Electronic fuel injection will supply the correct fuel amounts.

[@Geshmaal]

IMO not worth it to effectively halve your air filtering for a marginal gain in power. Paper filters are cheap and very effective and Enfield designed the bike with a specific level of air flow in mind. It's not like they accidentally added an airbox and filter that restricts airflow after designing the rest of the engine.

[@JIMWSMITH]

Your missing the point , think about it .

[@Geshmaal]

@@JIMWSMITH I am thinking about it, I think that's the issue!

[@AlbertDongler]

You're not halving your air filtering. What makes you think that ??

[@MagicRoosterBluesBand]

I put the DNA filter kit on my Meteor 350 and the performance is much better; can climb hills faster and hit top speed quicker. It is louder when you open up the throttle, but about the same noise as stock when idling. If that's not worth it to you then don't do it.

[@leebradley271]

how do you stop the bike being as slow as shit?

[@Scrambler695]

Royal Enfields are under powered af please try on some potent engine for better results ‼️‼️‼️

[@pggp273]

If you want a more powerful bike just buy a more powerful bike. The difference is negilble and wont make any difference in the real world for what this bike would be generally used for. Its ok for those who have to tinker for the sake of it and screw their bike up as consequence. Dont get fooled by all this bollocks

[@lalit3124]

THIS!

[@pggp273]

@@lalit3124 ?

[@panzerpoodle]

Nicht zu vergessen... Die kosten 😂

[@seanmack4552]

Extra air won’t hurt it, just shows how much they restrict bike because of sound and emissions these days…

[@MagicRoosterBluesBand]

I put the DNA filter kit on my Meteor 350 and the performance is much better; can climb hills faster and hit top speed quicker (75mph). For me, worth it. The bike has too much air restrictions to meet emission standards. This makes it run as it should.

[@-DC-]

Or have a big dump before climbing on your pathetically underpowered motorcycle and have a similar result, No one is going to notice a 1 Bhp difference but they will notice the empty wallet after falling for this BS. Don't buy an Enfield if you value any sort of Performance.

[@jeremymead8546]

The 1.5 bhp extra sounds pathetic, but it represents a 10% improvement, which is substantial. It's all relative to where you start from.

[@MagicRoosterBluesBand]

You sounds like a barrel of laughs

[@j.martin4476]

I would bet that this with upgraded cam and fuelx or an actual tune will guarantee 20 wheel hp

[@critterIMHO]

Isn’t roughly 25% loss between the engine and the wheel a bit much?