GS 1150 ADV Engine upgrades?

Discussion in 'GS Boxers' started by wicksw, Nov 18, 2013.

  1. wicksw

    wicksw Adventurer

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    Hi all - I am wondering what I can do to upgrade the powerplant on my 2003 GS ADV. I have refreshed and synced everything lately, and she is running strong, but I wouldn't mind a bit more power when loaded with panniers full, firewood, passenger, tents, etc.

    Hi-comp pistons, fuel mapping, what is out there? She also blows a little blue on start up, so I am looking forward to fixing that too. Only 12k miles but maybe there was some corrosion in the cylinder(s) when she sat for a long time.

    Thanks.
    #1
  2. mysticbus

    mysticbus Mysticbus

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    I don't know anything about hopping it up. My goal is to not go so fast, but go very very far :wink:
    As for the smoke, a lot of em burn a bit of oil, and tend to stop somewhere between 15-25k miles.
    The inside of the cylinders are plated with nickasil and the rings are very hard. Tend to make ring seating take a pretty long time.
    #2
  3. def

    def Ginger th wonder dog

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    If you will be patient, your boxer motor will reward you with more power once you ad some miles, My 01 provided me with more hp at about 22,000 miles.

    If you insist on engine mods, you have few options. I would start with more aggressive valve timing. Also, you might consider more displacement, titanium connecting rods and machining the rotating mass to make it lighter.

    I would not mess with the CR.

    Also, read roger04rt's writeup on wideband lambda and increased AFR.
    #3
  4. wicksw

    wicksw Adventurer

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    Thanks - reading up. Has anyone used a "Booster Plug" and are the results at all noticeable?
    #4
  5. def

    def Ginger th wonder dog

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    Just how much more power are you after? Or, do you really want better driveability, crisper throttle response and fewer engine flat spots?

    I would strongly recommend you read Roger04rt's recent posts regarding altering the AFR across the engine RPM band.
    #5
  6. roger 04 rt

    roger 04 rt Long timer

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    Nightrider.com produces a very good device(AF-XIED for BMW) that I specified for them. They sell it through Beemer boneyard too. It will increase the power, especially in the lower rpm range where it is most appreciated, and it will significantly improve throttle response. I'm friends with the owner of BoosterPlug and he added a lambda shifter line mine (LC-1) to his bike. You can read about it here: R1150RT Wideband O2 Sensor Project starting at post 145. There are many interesting charts and graphs in the thread.
    RB
    #6
  7. Dan Cãta

    Dan Cãta Long timer

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    Or you can install a set of Lennie's sprockets, instead of the OEM's ones. I have and like the effect. So do others that I installed them on, and you'll get a lot of positive reviews on this forum about them.

    Not so hard to install and the effect is clearly felt.

    No affiliations.

    Dan.
    #7
  8. flatland964

    flatland964 Been here awhile

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    I added Lennie's sprockets to my 01 1150GS and am very happy with the result. They don't actually add more power, per se, but they move the torque band lower in the rev range, as I understand it. The result is my bike pulls strongly and easily from a stop, even 2-up and loaded (which is exactly the result I was looking for). Much more so than before the change. I barely have to feather the clutch. It will also pull along off road at barely above idle, like a tractor, and ride comfortably at a lower RPM range when cruising (allowing me to put it in a higher gear).

    It flattens out a little sooner at the high end, but for me that trade off is perfect, as it is the low end where I need the power for everyday use.

    There are some long threads with people posting their results.
    #8
  9. wicksw

    wicksw Adventurer

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    #9
  10. liviob

    liviob Been here awhile

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    What are Lennies sprockets? I have an 01 R1150GS with 61K miles I bought used. I have put 20 miles on it before before taking it apart to service it before taking it on a trip through the high country. While riding it I noticed the off idle torque was very light and first gear was a little tall for my needs so I bought a 34/11 Final drive which should make first gear more useable and give the bike some more torque. I also purchased one of poolsides IICE AIR devices which should solve all of the off idle lean feel in the carberation. Otherwise I think this engine makes huge torque and considering BMW's clutch design adding more power could result in unwanted drivetrain problems.
    #10
  11. flatland964

    flatland964 Been here awhile

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    There is only one version, and the bikes it works on, it works on, which I think is all oilheads, but I know includes the 1150 engine.
    #11
  12. flatland964

    flatland964 Been here awhile

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    See: http://www.boxer-performance.com/

    Also, do a search in this forum. There is a long thread on them.

    The light off-idle torque was the reason I sought these out, and they definitely solved that issue on my bike. YMMV of course. And the abillity to move the bike just off idle makes the first gear seem less tall. No connection to the maker of these. Just a satisfied customer.
    #12
  13. wicksw

    wicksw Adventurer

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    #13
  14. Mike Figielski

    Mike Figielski Been here awhile

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    I'll chime in here. The AF-XiED unit is the far better choice and works really well with the cam sprockets. Of course I think you should get it from us a Beemerboneyard :D but I am biased...... The Booster plug or ICE AIR is not needed if you use an AF-XiED. I have the sprocket and AF-XiED combo on my R1100RS and it pulls like a tractor from low RPM and still revs out fine. The real world increase in torque and mid range HP is dramatic compared to stock. You won't regret it.
    Mike
    #14
  15. eric2

    eric2 ®egister this:

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    Easiest way to get more power is to sell the 1150 and get a 1200. Demand for the 1150 is still strong (some folks just like heavier,slower bikes more :dunno) so if you look around you could break even.
    #15
  16. liviob

    liviob Been here awhile

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    What is the difference between the IICE AIR and the AF-XiED besides $125.
    #16
  17. Mike Figielski

    Mike Figielski Been here awhile

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    That is a long answer, please read the post Roger linked to in post #6 of this thread. More info there than you can imagine.
    #17
  18. wicksw

    wicksw Adventurer

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    Thanks Mike, ordered that one.

    I don't like the new ones. Sparing no expense to make the older one into best possible setup. Too much sci-fi movie prop in the design for me. ;)
    #18
  19. billbeemer

    billbeemer bozo on bus

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    listen to mike at the boneyard. my 1150 is a totally different bike after installing the af-xied. it pulls like a banshee and all the pinging is gone. also the lugging is gone right off idle and i can cruise at 2800 in 6th gear. best $220 i ever spent.
    #19
  20. wicksw

    wicksw Adventurer

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    Did you do the cam sprockets too? Can't wait to try the tweaks...
    #20