Ok I'm just back from running some tests with my kev mod / dna stage2 filter .
I have the orignal snorkel but the tube has been removed so the inlet is the same as the dna cover .

kev mod is on 5en a half .

I also have leovince sbk exhaust.

The result is not that big , it's a little bit smoother up in rev's but maybe I was expecting too much ...

now I want to buy the stage 3 side filter ...maybe that will give me the result I'm looking for .

Is it a good idea to leave it on all the time ?

I use the bike for daily commuting but also to take it offroad as much as possible few times a week and offcourse over the weekends/holidays...

what with rain ? mud ? dust ? the filter is straightly exposed to the weather etc ... , will that be any good ?

The DNA propietary filter & oil compound guarentees water tightness of their filters, ensuring water is kept out and not allowed in the airbox unless the bike is immerged in water, like when you are crossing a stream or something.

However DNA also produces a cover that seals the filter back in case you really need to use the bike for those difficult rides through water. But otherwsise you are splash and hose wash proof for 1000's of miles and the good thing is these filters are lifetime filters you can always wash them and apply the re-activator compund (oil) also available for sale from DNA through us.

PM me for a quote.

Cheers

The snorkel needs to be removed to get the gains you are looking for, these XT's are very resticked on the intake side.

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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
[
My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

yes that's what I did the snorkel has been removed , I just cut it off as the ring is then identical to the dna stage 2 cover

any one else here got the Stage 3 side filter ? mine is arriving today ...

are you guys taking it offroad as well ? and does someone use the cover described by captmoto ?

I have the XTR Stage 3 airbox, it makes a huge difference, but I cannot compare to the Stage 2, as I just went to Stage 3. I think Stage 3 has a wider improvement in the rev band.

I take my bike offroad, and just remove the side panels and tape up the sides of the airbox. It doesn't make any noticeable difference to performance,......but then again, I'm offroad then.....

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2008 XTR Mods : DNA Stage 3 Airbox, PC111, Carbon Cans Ovals, Steve Ruth built XTR734cc Big Bore with - High Desert Dyno (HDD)/ Cuervo Racing Gas Flowed / Ported Head fitted with +1mm Valves & uprated Springs, HDD 5050 Camshaft, HDD +3mm Throttle Body, CP 105.5mm 11:1 Piston, Custom Mapping, Piasini ECU, Renthal 613-01, Barkbusters VPS, Pivot Pegz, Touratech Bashplate, Foam Grips, Kev's O2 Sensor Mod, Kev's Extra Coolant Cooler, Wilbers Progressive Fork Springs and Rear Shock

I called up DNA in Greece today and after a while they connected to the right person :

Very friendly ! that's for sure!

DNA was indeed planning to produce a cover part for the stage 3 side airbox filter , but this parts is up till today not yet produced .

The reason is, they are not sure it will be ordered enough ,
The only reason for that is the question if there is an actual gain in using this cover or not ...

The cover completely blocks the air intake to the side so this would leave you with a standard side box ,
This option would be helpfull in case of big water crossing , or heavy mud offroad use , you would be able to temporary place the cover , and remove it and afterwards with the side filter
again free .

So in case things will go very bad as the filter side doesn't always get splashes in normal offroad use , DNA prefers me just to place the original cover when things would go rough
and leave it open as long as you do daily commuting and day to day offroad use .

He also explained that the open filter can without any worry be used for general offroad use and can easly handle dust and water splashes as long is the filter is properly oiled
and MOST Important ! that the filter box is completely sealed with grease !!

Even with the original side filter cases and the stage 2 top filter DNA asked me to make sure I put on plenty of grease on the build in gasket of the cases as the airflow
produced by the dna filter easily could suck in dust or water through the original filter cases ...

The side filter is a big improvement as long as you keep it in good health and maintenance there is no risk at all for the bike ..

Send Peatbog a PM, he might be able to help you.

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Never underestimate the power of stupid people in large groups.

I did but he has no idea what I'm talking about, must be the wrong guy