25MPG on a 990 Adv?

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by Toddwmac, Mar 21, 2013.

  1. Toddwmac

    Toddwmac ADV addict

    Joined:
    Jan 23, 2010
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    Ok I know I'm not setup for milage, but does this seem right?

    I'm getting 25 MPG Highway @ Sea level

    • 16T/45T
    • TKC/Mefo Explorer
    • FMF Q4
    • "high flow" map (per FMF and set by the dealer)
    Thanks
    T
    #1
  2. Two Moto Kiwis

    Two Moto Kiwis Homeless Somewhere

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    Sounds heavy, we two up loaded on our carbed SE are getting 40 - 48 MPG depending on the right hand

    We have the same gearing too
    #2
  3. DSM8

    DSM8 Where fun goes to die....

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    Kiwi- His bike is Fuel Injected.

    Are you getting any EFI codes? Stock except for the pipes?

    Check your O2 sensors wires.
    #3
  4. Big_John

    Big_John That'll be the day

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    Can't help you....and know that you are FI.....

    but just purchased my 950 Carb model. I did a fly, buy and ride....for 900 miles+....

    and got


    41mpg
    42mpg
    40 mpg
    34 mpg (serious wind...upwards of 50 mph in the face....at 80mph)


    pleased with my mileage.....


    .....
    #4
  5. Toddwmac

    Toddwmac ADV addict

    Joined:
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    No other engine mods....just the pipes. The maps were done at a dealer. I need to take it in pretty soon for one of those low cost KTM oil changes...are there any codes or other things I can ask them about. (other than my milage sucks)


    #5
  6. mnsty

    mnsty Been here awhile

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    Torrance, Ca
    I don't wanna start the whole mileage thing again, but I have a 04 Go 950 with a head 2 wind jet kit and it gets 130 miles to the reserve light so about 25 mpg exactly...I mean exactly what it did before the jet changes. really love the bike but it makes going anywhere a pain in the ass, especially with my friend on his 1150 GS at 50 mpg.
    #6
  7. corndog67

    corndog67 Banned

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    But you have a better bike, have more fun, and exceptional kids too, so you win.
    #7
  8. Blue&Yellow

    Blue&Yellow but orange inside...

    Joined:
    Jan 31, 2010
    Oddometer:
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    The aftermarket maps are real gas-guzzlers.

    I had the akrapovic map before and got probably half the milage I get now after changing back to the stock map!

    I was a little hesitant about running aftermarket exhausts and stock map but temps are normal and I even checked the spark plugs when I changed oil a couple of months back - they looked fine so I'm not worried anymore. Probably set up pretty rich from the factory anyway.

    I've heard that people see huge variations in mpg depending on if they run side panniers or not - the 990 is pretty slim for such a big bike so they end up right in the wind blast.
    #8
  9. ABuck99

    ABuck99 0.0

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    At 25mph its running fat- I think with your gearing properly tuned should be closer to 35mph, but all that depends on how aggressively you drive it.


    Of course you can look at the ends of the exhausts, and plugs to notice rich running but to really know how much, you might consider gas analyzer. If you have access to a dyno near by, it wont cost much to have a base run done with the gas analyzer to map out your AF ratios at RPM increments- this will tell you how rich the engine is running through out the range wehre you normally ride (1500-6500rpm) and where to adjust your map, which can be done via Tune ECU. Bike needs to be nice & warm, have them run 4th gear up to 6500rpm. And if there is time, do a 5th gear run which will load the engine a little differently to see if there is any variance in the AF ratios.

    good luck
    #9
  10. Two Moto Kiwis

    Two Moto Kiwis Homeless Somewhere

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    Yes I know, hence I said ....

    as FI is usually quite a bit more efficient so he has issues.

    I would suggest the mapping is heavily fueled in the wrong places, my good mate with a SD-R has corrected his with Tune ECU/PC 5 autotune, took some doing but he gets far better fuel efficiency now and stronger right through the range

    His was extremely rich at idle and mid/cruising band and lean as hell at the top, now he has the perfect curve, torque and power to go with it.
    #10
  11. DSM8

    DSM8 Where fun goes to die....

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    You have two options.

    1. Dealer loads a different map back onto the bike. But you are dependent on the dealer to have the map changed every time if needed.

    When I had my 990 I was running a stock map with the aftermarket pipes.

    2. Go the TuneECU route. This will allow you to load your own EFI maps and there are enough people out there that someone from this site in your neck of the woods has to be around that has done this who should be willing to provide some assistance and advice.

    3. Do you own oil change, it is not worth the price the dealer want when you can do it yourself.

    here is a writeup on the HOW, very easy to do just take your time.
    http://advrider.com/forums/showthread.php?t=371723
    #11
  12. zen rider

    zen rider veteran rider

    Joined:
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    1) I agree on the new map and Tune ECU.
    2) Check your cruising RPMs on highway and consider softening the fueling around those RPMs a smidge.
    3) Consider a 17T front sprocket on longer highway rides, which will lower cruising RPMs and increase MPG. With practice this is a 10 minute job.
    4) Carry 1-2 Liter fuel bottles on longer trips.

    BTW I have heard the Q4 hurts MPG. I am thinking of an Adventuretank 2 into 1 with Q4 exhaust for my 990 anyway ($399).
    #12
  13. DSM8

    DSM8 Where fun goes to die....

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    For comparison.

    07 990
    Leo Vince System (this is the mid pipe and the cans not just the bolt on cans like the Q4)

    Stock Map (dont know what version but it was loaded in late 08)

    45mpg commuting to work
    38-40ish off road

    I dont think the pipes are what kill the mileage so much as just having a far to aggressive EFI map loaded.

    Just my .02
    #13
  14. mnsty

    mnsty Been here awhile

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    Huh??
    #14
  15. grinns

    grinns Semper Fi

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    I live close and I might have an extra 17 tooth. Plus I have tune ecu and stuff and a 990.

    Come out to the east side meet up sometime.
    #15
  16. Two Moto Kiwis

    Two Moto Kiwis Homeless Somewhere

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    Something to consider here, we changed from 17 to 16 to smooth the old doll out at lower RPM and our milage got better!

    The only thing I can think of is we are now using a lesser throttle opening to attain the same speed but pretty much we are two up all the time with house and contents on ... note air dam :D, maybe not so applicable with FI but something to thro in the mix that having the 16 tooth may not necessarily punish your MPG.

    Bloody good offer from grinns .. that is what make this place really worth while :clap
    #16
  17. cool1442

    cool1442 My favorite.

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    Ok, I know my 950 SE is carbed..which I prefer over FI.. but I want to contribute (maybe brag) here. I got my SE with Q4s but no spark arrestors. It was all messed up by a local shop..jetted way wrong, lots of air leaks. I had a local wizard jet it and seal up the leaks, added FMF spark arrestors and geared down to 16T. Result: goes like double hell, idles great, runs smooth, gets 40-42 MPG, runs 4 bars all the time, and is considerably quieter. A properly tuned bike will be smooth and cool and run great. What is not to like about this bike? I've never bought a bike for gas mileage, just for fun and it delivers on all fronts.
    #17
  18. AB13

    AB13 Ridge Runner

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    We are a Power Commander tuning center Q-4 slipons should not hurt mpg if the bike is tuned to the right AFR 13.7-1 is good for power and mpg with the PC-V you can have 2 maps one for power and one for mpg in order to tune the bike you must be able to read your AFR and load control the bike. :D
    #18
  19. tilting40s

    tilting40s Adventurer

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    Location:
    SF, CA
    My bike is gettin about the same. 07 990 w leo's custom map. I just cleaned out my map sensors today heard that could fix the mileage. We will see.

    http://www.flickr.com/photos/93984346@N05/8581903390/in/photostream

    Anyway this 1mm holes get clogged and I used a needle tip as seen to clear them out. I don't know if it is going to make a difference but I feel like the bike was smoother after.
    [​IMG]
    #19
  20. chrish4ku

    chrish4ku Been here awhile

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    Location:
    San Leandro, CA
    Custom Map = Strange Mileage.

    On my 2008 (RIP) I was getting 25 average in the dirt with the Akro map.

    2011 model, I get up to 38 HWY.

    It's all over the board....
    #20