1. 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

I couldn't keep it in my pants..

Discussion in '4 Stroke' started by Darkside, Dec 6, 2009.

Page 2 of 2

  1. hipsterdufus Husqvarna
    A Class

    Location:
    KS

    well said, just yesterday i was riding in the trails and at the same time wondering "why cant my bike run the same 2 days in a row" .....it was the same 30 degrees out sat and sun and it was like 2 different bikes. i would move on but i have to much invested in giving up and im the only guy in my area on a husky
    hipsterdufus, Dec 7, 2009
    #21

  2. Coffee CH Owner

    Location:
    Between homes - in ft Wayne IN
    Husqvarna Motorcycle:
    2006 TE250, 2013 TR650 Terra - sold
    I noticed in your sig you have a 2009 TE310 with PC V & Autotune. If you get motivated you could start up a thread in the EFI forum to let us know how it is working out for you.

    If you have already done that and I've missed it, please ignore my suggestion.

    It may be possible you are either not set up right or something weird is going on.


    ghte:
    For whatever reason Husqvarna choose to use Mikuni. No they are not as 'refined' as the Keihin based on the reports, and Husqvarna is relatively new to the efi scene compared to other manufacturers that make street bikes that already used efi.

    On the other hand, the information on Cafe Husky is cutting edge and raw. These topics are usually reserved for emails between departments / companies instead of posting on public forums. My hunch is that Honda, etc had a larger staff that worked out the technical details with Dynojet behind the scenes for instance.

    The good news is the ecus, as far as I can tell, are reliable - these are simply tune up and teething issues. Carbs have been around quite a while for instance, it will take time to get comfortable with efi.
    Coffee, Dec 7, 2009
    #22

  3. satori Husqvarna
    C Class

    Location:
    SE Michigan
    With the power-up (O2 sensor delete) these are running open-loop, meaning no feedback for changes in air density. I believe some of the competitor EFI bikes are running closed loop.. This could be the cause of your erratic operation.

    I have been watching this closely as I was really interested in this 250 IF the tech was sorted out. So far, things point to "not quite there yet".:confused:
    satori, Dec 7, 2009
    #23

  4. hipsterdufus Husqvarna
    A Class

    Location:
    KS
    i havent heard of a single efi bike running smoothly from the factory, closest would be the typical jap supercross bikes, but those arent perfect either......even the dream $9k husaberg is having reports of flameout.
    hipsterdufus, Dec 7, 2009
    #24

  5. KDXfile Husqvarna
    AA Class

    Location:
    Alabama
    Just courious, how would the bike run in "Closed Loop" mode? Would it auto adjust for air density/temp without having to re-map like reg EFI street bike?
    KDXfile, Dec 8, 2009
    #25

  6. jlk_250 Husqvarna
    A Class

    Location:
    Minneapolis, MN
    No, not correct. With the power-up (O2 sensor delete) these are running open-loop, meaning no feedback for the O2 sensor output. It still adjusts for changes in air density like it does if the O2 sensor is installed.
    jlk_250, Dec 8, 2009
    #26

  7. rabskyline Husqvarna
    AA Class

    Location:
    Sunshine Coast,Queenslander !!
    Husqvarna Motorcycle:
    2014 te250r
    Other Motorcycles:
    Yer maw !
    I love raw honesty,no bull, straight to the point and no defending their choice .... Class !
    rabskyline, Dec 8, 2009
    #27

  8. satori Husqvarna
    C Class

    Location:
    SE Michigan
    good information, thanks. If the system is compensating for density I'm curious why the erratic operation (stumble and hesitation) Hopefully, the people experiencing the problems get it straight with some simple tuning and break-in.

    Whether I spent $7000 or $9000, I'd be dissapointed in that level of refinement all the same.
    satori, Dec 8, 2009
    #28

  9. hipsterdufus Husqvarna
    A Class

    Location:
    KS
    i tried to resist telling my true feelings on this site just because i might need to sell the bike in the classifieds, :busted:

    i refuse to give up on my TE and would rather add another bike to my fleet. bottom line is it still gets great MPG for how rowdy it is
    hipsterdufus, Dec 8, 2009
    #29

  10. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    maybe Scott (Semco) or Dean can shed some light on this but I believe, at least on the 2010 version, it still has senors for altitude and temp and selects various base maps from that input. What you do in iBeat gets added to the current base map the ECU has selected for your ride conditions. TPS is also influencing this. So far i am pretty darn happy with the EFI on my bike.
    Motosportz, Dec 8, 2009
    #30

  11. Darkside Husqvarna
    AA Class

    Location:
    SF Bay Area
    Husqvarna Motorcycle:
    none left
    Other Motorcycles:
    beta, ktm, aprilia
    Both my 08 TE 250 and my new 10 TXC250 ran terrible with the O2 sensor in. Maybe because it's a California bike, I don't know. After switching to race map they both ran a lot better. I hate tinkering with jetting. Like everyone else, I want my bike to run perfect. But for me a poor running bike, old or new is a deal breaker. I'll invest a certain amount of time and energy. Once I run out of ideas, If it is not running satisfactory, I'll get rid of it. At least with the EFI I don't have to keep messing with the carb. I can just plug in and adjust the settings. I hope to hook up with Coffee soon and install the PC V w/autotune. I'll set the AFR to 14 and adjust the ibeat until the autotune does minimal adjustments and I'll post my findings.
    Darkside, Dec 8, 2009
    #31

  12. Coffee CH Owner

    Location:
    Between homes - in ft Wayne IN
    Husqvarna Motorcycle:
    2006 TE250, 2013 TR650 Terra - sold
    As far as I am concerned - nobody but the engineers knows for sure. Although educated guesses could be made.

    I would love to do an in depth carefully controlled study, but that would take much time, effort, and $. It could be done though.

    Bottom line is we are on our own with regards to these types of things so we need to muddle through as best we can. I am in search of a local 2010 250 efi bike to put the PC V & Autotune on it, that will reveal many many things such as compatibility of the PC V with those bikes and how far off the fueling really is. I've been trying to get some bikes to Vegas, no luck yet.

    I'd like to remind everyone that the 2009 efi bikes run really sweet as far as the fueling goes, the PC improves them noticeably but they really are not necessary.

    Perhaps Darkside will again be the test mule :)
    Coffee, Dec 8, 2009
    #32

  13. boisedave Husqvarna
    AA Class

    Location:
    Boise, Idaho
    I'm not sure if it makes a difference but here is an observation:

    Everyone [except for Husky] that offers an EFI bike in the states sells the bike in its "racing" form -- i.e. no de-restriction. The jap EFI bikes are all motocross racers [without throttle stops, catalytic converters, etc.]. The 'Berg, from what little I know, is set up for racing and doesn't require any "power up."

    They all, however, seem to have some issues if you start mucking with pipes, etc.. A friend of mine has the RMZ and loves the EFI. I also have a friend with the 570 Berg and he has no EFI complaints either.

    Husky, or so it would seem, sells its EFI bikes in a "restricted" manner -- i.e. not a racing state of tune. I get this on the TE [not really sure why on the TXC though]. I think the hiccup might be because the state of tune with the Husky requires you to play with it a bit. To me getting the Husky going is very similar to getting an off road 450 ready for the woods [think WR450 or KLX 450 -- where you have to remove parts, throttle stops, unplug wires, etc.]. The difference with the Husky is that you don't have a magazine article with a checklist [yet].

    What I think is cool is what is going on with the forum -- I bet in a month you will be able to log in here and get a checklist of what to do to your TC or TXC to get it ready to go. If I bought one, I'd review Kelly's EFI post and set it there and go. Good stuff. FWIW, I did the same thing with my 250XCW when I bought it [looked online for the hot setup and went with it -- flawless so far].
    boisedave, Dec 8, 2009
    #33
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