Hotrodding the GS

Discussion in 'GS Boxers' started by Poolside, Nov 18, 2010.

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  1. Happy Wanderer

    Happy Wanderer Day Dreaming.. .

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    If you don't have an IIce Air on the bike this thread is the wrong place to post your problem.
    Moderator: Clean up on aisle 3!

    Anyways...
    - the correct gap for your plugs should be ,028 not .035 I believe. Don't re gap old plugs, they may break and wreak havoc.
    - Have you cleaned the brass idle screws and the oriface they go into lately?
    - How's your air filter? Clogged up with dirt and dust maybe?
    - Who tuned the bike? If it was not you then you can't be sure the valves or the synch was done correctly.
    - If the problem did not exist before you changed the plugs... start there! It's usually the last thing that got worked on that leads to the solution. Retrace steps methodically and change only one thing at a time.

    - Oh and NO, The IceAir will not help with any of the issues you describe.
  2. Poolside

    Poolside Syndicated

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    Talk about cleanup, you guys don't need to re-quote his entire post. :D


    Regarding whether EKinOR questions should be here, they seem central to me.
    But you are right HW, we're not going to get into troubleshooting.

    <BR>
  3. Poolside

    Poolside Syndicated

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    <table border="0" cellpadding="5" width="650"><tr><td>You have some good questions, EK. My comments above appear in orange. The severity of the startup and drive-off problems you describe seem to indicate a problem with the bike.

    As to your other questions, on a bike that cold starts normally, here's what you can expect from the IICE products:

    Throttle response and acceleration: All three products, the Air, Cool, and Smooth, improve throttle response and acceleration.
    Surging: The Cool is the solution to surging. Kills surging dead.
    Overrun Fuel Cutoff: The Cool disengages the ECU's overrun fuel cutoff function.
    Cold Starting: The Air improves cold starting.
    Cold drive-off and warmup: Both the Air and Cool improve cold drive-off and warmup characteristics.


    Recommended reading.
    Here's a chart that describes how Fuel Injection works, and how the IICE products fit in.
    http://www.advrider.com/forums/showthread.php?p=14523744#post14523744
    </td></tr></table>
    <BR>
  4. Poolside

    Poolside Syndicated

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    <BR>Build Process - Start to Finish - Group 1 Pics
    Build Process - Start to Finish - Group 2 Pics
    Build Process - Start to Finish - Group 3 Pics
    Build Process - Start to Finish - Group 4 Pics

    ...to be continued

    The pics below show the building of a small batch of harnesses.

    If you have questions about a particular step, PLEASE DO NOT QUOTE THE ENTIRE RUN OF PICTURES.&#8194;:D&#8194;Thank you.


    Cut the wires and cable jacket to length.

    [​IMG]


    Prep the wires by stripping one end to a precise length, and slip the waterproof seal over the wire.

    [​IMG]


    Attach the wire and seal to the contact.

    [​IMG]


    Closeup of 'socket' contact.

    [​IMG]


    Closeup of 'tab' contact.

    [​IMG]


    Ready to put all the pieces together. Insert a pair of wires, contacts, and seals into each connector housing.

    [​IMG]


    Slip the wires through the cable jacket, and strip that end of the wires.

    [​IMG]


    The harness wires get soldered into the four empty through holes on the board.

    [​IMG]


    Next up, soldering the harness to the board.

    ...to be continued

    <BR>
  5. EKinOR

    EKinOR Been here awhile

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    See above - "I have an Ice Air on order"

    Perhaps I wasn't clear - I only did one change at a time, resetting the Motronic between each change. I would make a change, reset, then ride for 100+ miles in varying conditions. Only one thing changed at a time.
  6. EKinOR

    EKinOR Been here awhile

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    Why is this the wrong thread? It's not "The Ice Air Thread" it's "Hotrodding the GS", which, to me, implies dealing with performance issues on the "GS". Additionally, very knowledgeable people, such as Poolside and Roger04RT, frequent this thread and I was hoping to get their input.

    You believe or you know? Factory spec is .031, but many people have reported good success with .035 on the Autolite plugs. And where did I say I regapped old plugs? Why would anyone use old plugs? They were new plugs, gapped properly using a plug gap tool. I've been setting spark plug gap for over 30 years and haven't had one break yet.

    Nope. Everything I've read says not to mess with the BBS.

    Nope, it's clean. And a clogged air filter generally affects high RPM performance first.

    This is true. The valves and sync were done by a person very knowledgeable on the Boxer motor and specifically the oilheads. But, I did not witness it myself. If I can ever find a Harmonizer for sale, I'll check the sync myself.

    Did you actually read what I wrote? The new plugs slightly improved things.

    Why do you say that? Poolside seems to think it will help with some of the issues.
  7. EKinOR

    EKinOR Been here awhile

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    Thank you. Any suggestions on where I should start troubleshooting, based on the hard start issue? The other interesting thing about this is it only happens on the first start up of the day. If the motor is at all warm, it fires right up. Also, I only get the hesitation/stumble on the first few tip in/leading throttle events after a hard start.

    Thanks! I'll read through it again.
  8. Happy Wanderer

    Happy Wanderer Day Dreaming.. .

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    If you only want Poolside's opinions or responses why post in a public forum? Just send him a PM and spare us.
    :huh
  9. Poolside

    Poolside Syndicated

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    <BR>Back again sweetcakes?&#8194;Every couple of months just like clockwork.


    <BR>
  10. badbs101

    badbs101 Adventurer

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    If I understand correctly, the upcoming Ice Cool product will work by spoofing the coolant/oil temperature sensor. Does this mean the temp bars on our display reading will be incorrect? Sorry if this question has been asked before.

    Looking forward to the end of surging.:D
  11. stan23

    stan23 Been here awhile

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  12. Monsignore

    Monsignore Plunger Boy

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    I searched the thread but couldn't find the answer;

    When doing a TB sync do I need to set the IICE AIRE to 0* (The "pretend it's not installed" setting) or can I leave it at the -20* setting?

    Thanks.
  13. rutard

    rutard Magnanimous Madcap

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    I sync mine setup the way I ride it.

    When TB Syncing you are doing two things: setting idle RPM and equalizing the vacuum pressure of air intake to each head.

    I cannot see how the IICE Aire would affect the pressure differential between the heads. It may affect idle RPM, but I am not a scientist.
  14. Poolside

    Poolside Syndicated

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    Thanks for your order, Stan! We appreciate it.


    <BR>
  15. Poolside

    Poolside Syndicated

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    <table border="0" cellpadding="5" width="650"><tr><td>Thanks for jumping in, Rutard. Cheers.

    He has it right, Monsignore. The IICE Air can be at any setting during a throttle body sync. But with one possible caveat outlined below.


    Tech info:

    When the motor is cold, or just starting to warm up, the ECU is in Open Loop at idle. At that point the Air does have an effect on idle. But since a throttle body sync is done with the motor warmed up, the effect when the motor is cold isn't relevant.

    When the motor has partially warmed up, halfway warm say, the ECU operates in Closed Loop at idle. From that point the ECU essentially ignores the Intake Air Temp sensor at idle. The idle sync will not be affected.

    However, here's the possible caveat. When doing the high RPM sync, there might be a potential benefit to setting the IICE Air to the 0° offset. I say 'might be' because I do not remember if the ECU operates in Closed Loop at 3000-4000rpm, when revving a warmed up motor in neutral.

    If anybody has a GS-911 handy, you want to try checking something on your 1100/1150 or 1200, and posting your results? Not a throttle body sync or anything, just plug in the GS-911 on a warmed up bike and check one of the readings.
    </td></tr></table>
    <BR>
  16. roger 04 rt

    roger 04 rt Long timer

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    On my 1150 at about 3000 RPM, in neutral, my GS-911 reports Open Loop. My LC-1 (after the Adaptation period) reports no IAT enhancement. I would sync with the iiCe Air set as it is run. RB
  17. Poolside

    Poolside Syndicated

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    <BR>Thanks Roger, but you have a significant modification to your bike.

    Would anybody like to contribute a GS-911 check on their 'stock O2 sensor' bike?

    <BR>
  18. roger 04 rt

    roger 04 rt Long timer

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    You're welcome. The GS-911 data was taken before and after the modification on my 1150.
  19. Poolside

    Poolside Syndicated

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    <table border="0" cellpadding="5" width="650"><tr><td>If anybody has a GS-911 handy, you want to try checking something on your 1100/1150 or 1200, and posting your results? Not a throttle body sync or anything, just plug in the GS-911 on a warmed up bike and check one of the readings.

    It will take just a couple of minutes. Post up if you are interested.
    </td></tr></table>
    <BR>
  20. roger 04 rt

    roger 04 rt Long timer

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    It would be good if you could get one of each. I believe that the 1100 and 1150 have different Closed Loop areas. And doesn't the 1200 use a BMS-K ECU versus the Motronic used for 1100/1150?
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