KTM 690 Air Filter Options..

Discussion in 'Thumpers' started by 0mega, May 16, 2017.

  1. 0mega

    0mega Dreamer

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    What is the consensus on best air filter option for our 690? Specifically for long distance touring.
    My main concerns are serviceability and maintaining high fuel mileage (aka no pod filter).

    The bike came with the foam uni filter (but no evo 1 cover) but I was concerned the stock snorkel wasn't making a good seal between the filter lip and the air box. Switched to the Rally Raid foam filter because I could silicone the metal base to the airbox and guarantee a good seal.

    My concern now is that the rally raid filter is very exposed to larger crap, splashed gasoline, rain, etc...

    Any opinions on which setup best for long stints away from the garage? Other ideas to extend service life?
    #1
  2. renogeorge

    renogeorge Let's ride!!

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    Just curious why you think the pod filter won't work for your type of riding. I have run one for several years on both 690 and 990. , Mexico and Alaska trips included. Lots of dust and lots of rain. Bikes ran at least as well or better than stock with no detrimental impacts on mileage. Pre filters available to extend service intervals and minimize any possibility of water getting in. IMO, there is no better solution to the problems associated with the 690 air box design than to dump the air box and install a pod filter. Bonus points for making routine maintenance easier and allowing for a Rade 1.5 gallon tank where the air box used to live. YMMV
    #2
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  3. ssmith

    ssmith Adventurer

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    As above, I have a Rade tank with pod filter. Started with the Rade-supplied K&N pod filter with sock, then switched to a UNI pod filter with Outerwears sock. No noticeable change in mpg whatsoever, but love this system for ease of giving the filter a clean/swap and doing basic servicing like a valve check or injector clean during a long trip.
    #3
  4. blk-betty

    blk-betty bam-a-lam

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  5. 0mega

    0mega Dreamer

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    I guess my major concern was reports of pod filter decreasing mpgs. Good to hear y'all are maintaining close to stock. I do really like the idea of accessing fuel system without having to remove tanks and airbox everytime.

    I'll look into it but two questions come to mind:
    What map do you use?
    Where does the IAT (intake air sensor) mount?
    #5
  6. sprouty115

    sprouty115 Long timer

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    I had Rally Raid filter and it flowed a ton of air, but it had two issues: the intake honk was terrible and it got filthy pretty much every 100-miles or so. I switched back to the stock air box with added holes and a DNA filter. I don't feel like I gave up much, if anything for HP, it tamed the intake noise, and it stays a lot cleaner. I've never used a pod filter, but I do like the easy access to the head that it would provide and I'm still considering it.
    #6
  7. 0mega

    0mega Dreamer

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    Pod filter and sock ordered, I have a few smaller trips planned before we leave Seattle so I will give it a shot.

    Seems to be a lot easier to maintain. Just gotta find a home for the breather tube and Intake air temp sensor.

    Will have to be careful in deeper water crossings with lower air intake location.
    #7
  8. renogeorge

    renogeorge Let's ride!!

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    Intake sensor just lays along side of the filter. Works fine.

    I run crankcase breather tube to a small K and N type filter behind left front side panel.

    Mapping question depends on year model. 2013 and earlier Tune ECU with AmA maps. Later years require dealer remap or PC Commander piggyback programming solution. But I'd make the changes and ty it without re map. You might be surprised.....
    #8
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  9. ssmith

    ssmith Adventurer

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    Mine is a 2016/2017 model. I'm using the UNI pod filter (4245AST IIRC) with an Outerwears 20-2449 sock, and a Wings exhaust. No remap, just the 15 minute idle/reset. Works perfectly for me so far. I commute about 35kms a day and consumption is about 4.1-4.5l/100km (51-57mpg US), depending on density of the traffic and need for 1st/2nd gear lane splitting, or mud roads I take a short cut on, or if I fill with 95 or 98 fuel (98 fuel gives better mileage). Those fuel consumption numbers are based on an average speed of 32-40km/h in the city. On the open road (which I've yet to do a lot of) the gas mileage is closer to 56-58mpg, though that's with the bike unloaded. I'm still on the standard map setting on the under-seat dial and these numbers are based on riding at an altitude of 1700m (5600ft), which I've read may help with getting better consumption.

    I keep two filters in rotation so always have a clean/oiled spare, and rotate them about every 5-600km, just because it's so quick and easy to do. When i swap I run a tissue inside the port and always find it slightly oily, but never dirty or dusty. The Intake Air Sensor I've zip tied in the general vicinity of the filter. Have done nothing with the breather tube, but will make a note to look for it!
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  10. ssmith

    ssmith Adventurer

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    I'd also add that as I live in Kenya, where most of the adventure riding is open savannah/desert-type riding, the issue of water-crossings was not really something that I felt I needed to consider. There's a drought here right now, but even at the best of times the rainy seasons are short and sporadic, and when that happend the risk is mud and, in some areas, rapid river surges that carry away even the best 4x4's. Deeper river crossings tend to be avoided as crocs and hippos have a habit of popping up when you least expect. So in general I don't expect to be doing many crossings.
    However, if I lived somewhere like SE Asia and had an annual monsoon to deal with, or somewhere with big/deep crossings, I'd probably stick with the stock airbox with a foam filter in that. Basically the best option for you is that one that fits your kind of riding or potential riding scenarios.
    #10
  11. 0mega

    0mega Dreamer

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    Alright installed the K&N RU-1750. Was super easy and bike seems to be running fine after 15 min reset. Still running EVO 1 tune with SAS and O2 on. Ziptied IAT nearby.
    Already loving the easy access to FI system and the fuel filter I added. Now just to wait for outwears sock and fabricate a tray to use the space freed up by the airbox.


    One other data point, bike has been sitting outside for a few weeks since the last time I had the airbox off and there was about 6 ounces of water in it. Another reason I am glad to not trust the Rally Raid filter for longer trips and variable conditions. Otherwise was still a better setup than stock IMO.


    One (hopefully) last question: Previously the crankcase breather and the head vent both went into the airbox. I know one option is to just route these two into a small pod filter. But is there any reason they can't just be connected, perhaps with a PCV like on a car? I get that blow by is creating positive pressure in the crankcase. What is the head 'breather' even for?
    I have removed the SAS so these are currently the only ports in the engine (other than CAI and exhaust of course).

    Attached Files:

    #11
  12. windblown101

    windblown101 Long timer

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    Lots of good options out there. Anything that provides a better seal so that unfiltered air doesn't get into the motor is a plus. I tried a uni-filter with an EVO-1 lid on my '17. I didn't like having to bother modding the UNI to fit properly and wouldn't have trusted the seal much with the easily flexed EVO1 lid or the factory lid for that matter. I then bought the TwinAir cartridge air filter set up. Still had to mod the cage to get it to fit on the newer airbox. I liked the design but it had a terrible intake honk and the filter area was small and crudded up super quick.

    I Ended up going with the Rally Raid filter setup. I feel the silicone seal is as good as a pod filter. Cleaning is a snap, just one wing nut to pop it off the bike, and this set-up keeps the filter a little higher on the bike with a solid airbox underneath which makes me feel better about jumping into water crossings where the additional 4 inches and better blocking from splash "could" be the difference between getting to the other side with the motor still running.

    Bonus is that while it's still loud, it's not as annoying as the twin filter/EVO1 lid combo to my ears anyway. So far the airbox is staying spotless and the filter is doing it's job. Here's a pic after a day of riding in dusty conditions with just a couple of other riders and not being in the lead. Glad it's easy to get to, unlike the airfilter on the big bikes. :)

    690 airbox.jpg
    #12
  13. le har

    le har n00b

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    I use rally raid filter, also
    and spray little bit filteroil in the airbox to catch incomming dust during filter changes

    This filter worked perfect at the last very dusty ktm adventure rally in italia and this funny day:

    #13
  14. CDN Rick

    CDN Rick Canoodia Eh?

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    Just me or the lighting or is that one really dirty fuel filter?
    #14
  15. sprouty115

    sprouty115 Long timer

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    DNA filter after 1000Km of Gaspe trails (sorry for the poor focus)
    [​IMG][​IMG]

    And my airbox just after removing the filter - nice and clean...
    [​IMG]
    #15
  16. Polargeist

    Polargeist Been here awhile

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    Dont suppose you have found anything to deaden that noise? While I do enjoy the braaapiness from a throttle out, it gets very very annoying on long freeway stretches. I can hardly hear myself think half the time because of the noise coming from the box.

    I was also thinking about making a small delron deflector up front to go between the filter and the coolant resevoir to aid in keeping splashed water out.

    Edit: Missed my quote.
    #16
  17. jcurl

    jcurl Adventurer

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    Trying to gather information on all available options for my 2017. Forums a bit hard to search, so sorry if this is old news. Anyone care to add or correct?

    Rottweiler - $360
    • Flow: Highest
    • Dust Protection: Excellent
    • Noise: High
    • removes airbox and snorkel

    PowerCell - $300
    • Flow: High
    • Dust Protection: Excellent
    • Noise: High
    • No snorkel, replaces airbox

    Rally Raid Kit - $99
    • Flow: High
    • Dust Protection: Excellent
    • Noise: ?
    • Removes Snorkel

    TwinAir drop-in filter (PN 155510P) - $49
    • Flow: Stock?
    • Dust Protection: Good
    • Noise: Stock?
    • Stock box and snorkel

    Pod Filters
    • Flow: Highest
    • Dust Protection: Excellent?
    • Noise: High?
    • removes airbox and snorkel
    DNA Filter?
    #17
  18. levain

    levain STILL Jim Williams

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    I have a DNA filter I'd sell if interested. About 5000miles on it. i switched to a Rottweiler. It's the same one @sprouty115 pictures above. I still wonder why your filter was so much dirtier than mine on the same trails??
    #18
  19. zbob

    zbob Adventurer

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    Rottweiler Fan here, opening up the front section under the seat for tool storage is damn near worth the price of admission alone. 1D5976FF-6B22-4D46-9A3B-F569CCE5ADE3.jpeg
    #19
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  20. sprouty115

    sprouty115 Long timer

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    Because you have enough sense not to follow 10-feet behind me when I'm leading...
    #20
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