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  # 1  
Old 16-06-10, 22:57
radu radu is offline
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Question K&N or DNA air filter?

hi, i,ve got an xt 660 r with a k&n air filter on it, but i see in a lot of threads that a lot of you have the dna stage 1 and 2 air filters. can you please explain which is better and why and which is not so juicy on fuel. since i fitted the k&n i do about 10-15 miles more before the light goes on. thanks
  # 2  
Old 16-06-10, 23:31
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All the info is in the modification index click on the link below.
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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

  # 3  
Old 17-06-10, 21:57
Bishop0151 Bishop0151 is offline
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I think the short answer is that a K&N stage one gives you better (more) airflow than standard and a DNA stage 1 is better than a K&N. That's on paper, but I don't think that you would notice much difference between the K&N and DNA stage 1.

The real gains start when you fit a DNA stage 2 as well, but only if you can modify your fuelling. The stage 1&2 allow that much more airflow you can afford to inject more fuel and get better power. Member use K&N stage 1 and DNA stage 2 without any problems.

The ideal fuel mod is the likes of a power commander (�250 ish) but a Kev mod works fine for about �25 (or make your own for about �5). Myself and plenty of members use them.

Combine this with removing the snorkel and drilling the air box and it's good step up. +~10% bhp.

The DNA stage 3 is a whole other thing and definitely needs a power commander.
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  # 4  
Old 17-06-10, 23:36
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Don't forget that test carried out in this forum show that the DNA contains a certain larger percentage of HIGH FLOW compound that first of all ensures cleaner air is introduced to the engine for longer periods which means you get more miles bwtween washes (yes these filters are lifetime and are washable & reusable).

As for performance we have a dedicated post which shows graphs and charts with the relevant performances and the DNA was clearly the winner.

For more details on these proven claims read this thread:

http://www.xt660.com/showthread.php?t=9848
  # 5  
Old 18-06-10, 08:51
maxwell123455 maxwell123455 is offline
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Personnelly ive got a K and N stg 1 filter and a DNA stg 2 filter. I bought the K and N first from my dealer, then found a second hand DNA stg 2 on ebay from another forum member on here.

For the differences in the K and N or the DNA im not sure, all the charts, graphs and information point towards the DNA being better, allowing more air flow into the engine and therefore giving you a better bang from your engine.

But for the differences between a stg 1 and 2 is massive. The stg1 really just gave me a bit more low down grunt and more noise, the stg 2 gave a huge increase in power low down and up in the rev range, also the snap while getting back on the throttle
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Last edited by Kev; 18-06-10 at 11:36.
  # 6  
Old 18-06-10, 11:36
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Kev Kev is offline
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You need to try the stage 3 air box then, double the gain in HP & torque of the stage 1 & 2 filters combined.
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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

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