BMW G650X PowerCommander info & experiences (V and III models)

Discussion in 'Thumpers' started by FinnDuro, Jan 26, 2011.

  1. aprilian

    aprilian Can I change this?

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    Interesting development. I watched a You tube vid from Chris at Dynojet which noted that there was flashing on some of the CAN connectors that prevented them from snapping in all the way. Both ends of my cable and the termination plug all had the flashing and once I cleaned that off they all went home with a click. Shutdown the program on laptop and restarted it. Success! The Laptop now sees the bike and gets real time info. However...

    .. the laptop RPM is reading TWICE the actual RPM (or four times what Mal had!:eek1:lol3). While in actuality this could give me twice the granularity of a standard install, I'd much rather just have it work as intended - making it easier to tweak.

    Any insight into what could be causing this doubling of RPM?
  2. leafman60

    leafman60 Long timer

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    Sounds like somehow you've gotten an F650 map. BMW has its nomenclature all screwed up. The poor man's version of the 800 twin is still an 800 twin but they call it an F650. (Changed to 700 this year.)
  3. leafman60

    leafman60 Long timer

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    I've been reading this old thread that seems to have gone cold after a couple of years. Alas, our X series seem to be lost in a continuing snow of time. Discontinued and slowly relegated to the dust bins of history. Sigh.

    Anyway, Im still enjoying my XCo. Runs like a raped ape. I've posted a lot over the years on the XCo thread.

    Everything is just fine but, you know how it is, we can't leave well-enough alone.

    I am casually interested in a Power Commander. I'm currently running a Booster Plug with no problems. Just curious.

    First of all, this Finn dude is amazing. Ditto the boy from Norway. Like most of the folks in Scandinavia (I've been there a few times), they speak english better than most people here ! Sheeze, they've even got a few of the slang colloquilisms down. Anyway, I appreciate their tenacity regarding the PCV issue.

    My big question: Has anyone using a Booster Plug ditched it and installed a PCV? Improvement worth the cost? Somebody asked this earlier but I never saw an answer. Probably (or prolly as Finn says) nobody in this category.
  4. aprilian

    aprilian Can I change this?

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    From studying this thread before my install, I think the booster plug tricks one of the temp sensors which gives a constant start-up enrichment. This can cure many problems, but may add fuel in place where the bike has too much fuel already. Look at the PCV fuel tables for this bike and you will see some cells have a negative number (download their software then get the G650X maps, they will open in the software).

    My ranking (based on improvement possible - which interestingly is the inverse of bang for the buck) would be
    Booster Plug
    Larger injector
    PCV
    PCV with Autotune

    I chose the PCV and Autotune with a map switch. I am building two maps - Street and Track. I will Autotune each with a specific fuel (non-Oxy for track). When they are fairly stable (not getting much correction from Autotune) I will remove the Autotune and use the map switch to alternate between Street and Track. That way I will have max power at track and better balance of power and mileage on street.
  5. leafman60

    leafman60 Long timer

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    My Xco is running great with the Booster Plug. Yes, it is simply a temp sensor modifier. The BMW ECU does the rest.
  6. leafman60

    leafman60 Long timer

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    Ok, ok, ok, ok. Where is the best place to buy in the US ? I havent done a search.
  7. aprilian

    aprilian Can I change this?

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    I found the best combination of price and trustworthiness from Sportbike Track Gear. YMMV
  8. aprilian

    aprilian Can I change this?

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    In the interest of full documentation
    1) and 2) CAN connectors not seating
    3) they sent me a single cylinder map. Really wouldn't make a difference as the PCV would have just looked at cyl 1
    4) when I got the autotune on, the AFR map showed up - no need to manually enter
    5) no - as long as not sending or receiving a map
    6) they sent me a small firmware update that fixed this
    I also learned that
    you should update software and firmware no matter how new the unit is
    autotune flashing red status led turns solid when unit is live after warm up
    Switch position for using autotune is when switch is "completing the circuit"
    not reccomended to leave USB cable plugged in since case is plastic and might crack. I will have to think how to mount it in a way to easily connect for trim map acceptance
  9. leafman60

    leafman60 Long timer

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    It all sounds pretty snazzy. I think Id spring for the whole thing, Autotune and all.

    I see Hard Racing in NC carries these. Ive bought Ohlins from them in the past.

    This is about a $500 add-on.
  10. Antti

    Antti Been here awhile

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    Any process on this michel?
  11. Antti

    Antti Been here awhile

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    They both fit just under sidepanel with a bracket. Still need to add swich for map selection.

    [​IMG]
  12. aprilian

    aprilian Can I change this?

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    I mounted mine similarly with one exception. I mounted the PCV to the trim panel and made sure the rubber plug was easy to get to so I can flash maps without having to remove anything. The orientation is the same as yours. I bought a 90 degree USB cable since it was a tight fit to get a traditional cable in without pressure being placed on the cable from the oil tank trim piece.
    [​IMG]
  13. Antti

    Antti Been here awhile

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    Ok, after pic I have turned PC 90degs to reach usb port better. Wires on PC are a bit short to find good posititons. Been thinking about leave usb wire there to get it easily connected until get it working correct.

    Any toughts about suitable AFR target values for Rotax? I know one case when XC has been on dyno with autotune and dynoguy told that AFR could be as rich as 12.7. His opinion was that AT needs slightly richer setting what his measurement shows. So I'm thinking that I'll start values between that 12.7 and 13.2. Can't go much wrong with them?
  14. aprilian

    aprilian Can I change this?

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    From my emails with Dynojet
    When you load any map, your AFR table will have target AFR's as a starting point.
  15. Noillek

    Noillek Nomada Portugues

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    Hi all,

    Just got a PCV for my 2007 Xmoto, easy install, official Map01 (stock air filter and stock exhaust), although i have a unifilter and inner airbox cover removed.

    1st test ride was nice smooth and strong allowing me to ride at very low rpm without any problem.

    2nd test ride, highway, full throttle, very strong front wind... max. 165km/h (my top in autobahn was 193 km/h, cutting on the redline) and after a while keeping the speed the full throttle i cut gas and the engine starts to cough, something like if the gasoline has been over... give a full round of throttle and was ok again, cut the gas and the same cough... try to go stable on the throttle and coughing all the time... was getting worse and worse and after stop at a gas station, idle was pretty good everything was fine.

    Switch off and on again and it goes fine again... did anyone experience this behavior after installing the PCV? Should I be concern? there's a friend that told me that i need to install Autotune in order to work always fine... is this true?

    By the way i live in The Netherlands... sea level.

    Thank you for whatever help you can give.

    Cheers,
    Pedro
  16. FinnDuro

    FinnDuro Winter wonderlanding

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    I had similar behaviour with mine back when I had the Xchallenge.
    I suspected the crankshaft pulse sensor at the time, and fixing that cured my symptoms. I adjusted the sensor just minimally (0.1-0.2mm) closer to the magneto flywheel, and it did the trick. PCV needs a strong pulse signal (from the posi-tapped wires) so if I were you I'd check the sensor and your wiring to that to make sure it's all good. Autotune is not needed for this.

  17. Noillek

    Noillek Nomada Portugues

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    Hi FinnDuro, thank you for the quick reply, that indeed can be, i did something wrong initially and cut the crank sensor wires instead of hot wiring them. I reconnect them again... dont know if i did it on the best way.

    I will check that and you say that i should re position the posi-tapped wires closer to the engine then? so it picks the pulse easier? Sorry im not very technical... (that's why i cut the wires instead of hot wire them).

    Will try tomorrow and let i will post how the fix went.

    Thanks once again.
  18. FinnDuro

    FinnDuro Winter wonderlanding

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    No, it's not the posi-taps location. You would have to check and possibly minimally change the position of the actual pulse sensor inside your magneto engine cover. It's a somewhat technically involved process, not too hard though, but would not call it easy either.


    EDIT: So, you'd need to check the Pulse generator part and fitment (part 3, possibly minimally change fitment 16)

    parts fiche: http://www.maxbmwmotorcycles.com/fiche/DiagramsMain.aspx?vid=51546 , check 12. Engine Electrics.
  19. Noillek

    Noillek Nomada Portugues

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    It seems a bit technical indeed... I will try to do a few more tests, saw in the Power commander faq that can also be non stable 12v minimal.

    I will review connections and leave this procedure as last option as I'm not sure if I can do it my self.

    Thank you for the guidance I will keep you posted if I find any improvements.

    Cheers

    Sent from my GT-N7000 using Tapatalk
  20. Lonsdale

    Lonsdale GravelLord

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    Here comes some numbers:
    Xchallenge Setup: Unifilter + pre-filter with PCV.

    On the wheel mesurements:
    - Remus slipon 51hk/6200rpm & 63Nm/5700rpm
    - Stock slipon 49,5hk/6500rpm & 63Nm/4500rpm