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  1. Replies
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    Idle balance is pretty sensitive. You could try...

    Idle balance is pretty sensitive. You could try marking them but it would be better to buy a Twinmax or build a manometer with tubing and ATF (search and you'll find many descriptions).
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    http://www.beemerboneyard.com ...

    http://www.beemerboneyard.com

    http://www.maxbmwmotorcycles.com/fiche/PartsFiche.aspx

    http://www.euromotoelectrics.com
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    If your highway mileage at 75 was normally 47-48...

    If your highway mileage at 75 was normally 47-48 mpg, and you set 12.8:1 which is about 13% richer than stock, I'd expect a 7-8% drop in fuel mileage at that speed. That would calculate to about 4...
  4. Thread: EFI MODs

    by roger 04 rt
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    6,204

    RSH & Wyman.Winn, Although I don't have the...

    RSH & Wyman.Winn, Although I don't have the pleasure of riding an R1200RT (was thinking about the new one though), and although the AF-XIED is Nightrider's product, thank you for posting your...
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    Jeff, How mechanical are you? Can you measure...

    Jeff,
    How mechanical are you?

    Can you measure the flow of fuel coming back from the fuel rail?
    RB
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    Below is a pair of charts showing a 2001 R1150GS...

    Below is a pair of charts showing a 2001 R1150GS performance following a Cold Start using the GS-911. This data was taken after installing a new O2 sensor, with a Yellow Coding Plug jumper, and with...
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    On the R1150RT iABS, creating hydraulic pressure...

    On the R1150RT iABS, creating hydraulic pressure with either the front or rear brake causes the ABS controller to light the rear brake light. Also, opening either switch contact causes the Brake...
  8. Thread: EFI MODs

    by roger 04 rt
    Replies
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    6,204

    Bernie, If you're referring to Innovate...

    Bernie, If you're referring to Innovate Motorsports LC-2s or an AF-XIED kit from Beemerboneyard, either is the real-deal and will make a noticeable performance improvement. Worth the effort and...
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    Not sure but Doug probably knows but I would...

    Not sure but Doug probably knows but I would guess that they're pressure transducers whose voltage or resistance varies with pressure.
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    I bought the pc680 and would buy it again. It was...

    I bought the pc680 and would buy it again. It was not a good match for my dozens of short trips, test time with the ignition on while I set up the GS-911 and LC-1 for measurements, and then kept it...
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    The correct method for setting the TPS does not...

    The correct method for setting the TPS does not involve a voltmeter even though you can read in the Zero=Zero procedure that you should.

    Referring to the schematic (here, Doug Raymond R1100...
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    Mine was a Battery Tender Jr. I was doing a lot...

    Mine was a Battery Tender Jr. I was doing a lot of testing of the fueling system with frequent starts, making a lot of short trips and always connecting the BT Jr. The combination of all created a...
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    I hear you ... The PC680 is a good battery but...

    I hear you ...

    The PC680 is a good battery but is not naturally a good match for the Oilheads because it requires about 0.7/0.8V higher charging voltage than Gel or FLA. Many Battery Tender...
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    The voltage regulator inside the alternator,...

    The voltage regulator inside the alternator, which I just had apart a couple months ago is stamped 14 volts. Below 20/25C (not sure exact crossover temperature) the voltage is slightly higher, above...
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    The voltage regulator inside the alternator,...

    The voltage regulator inside the alternator, which I just had apart a couple months ago is stamped 14 volts. Below 20 or 25C the voltage is slightly higher, above 20/25C it gets lower. In GS-911 logs...
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    The system is pretty complex, and Doug Raymond...

    The system is pretty complex, and Doug Raymond (on-line schematic author) has been extensively working on a problem with his R1150RT. That has led him to update the schematics with some help from me...
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    The factory flow tested your throttle bodies so...

    The factory flow tested your throttle bodies so that the same amount of air would flow through them for the same angular throttle displacement. I can't see any reason to believe that 0=0 will...
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    There's so much good advice in the thread at this...

    There's so much good advice in the thread at this point that I don't want to create confusion. But I would caution using what is known as the zero=zero procedure. If the screws on the TB stops and...
  19. Alex, Excellent write up, thanks. I noticed...

    Alex, Excellent write up, thanks.

    I noticed you didn't remove the starter gear from the shaft. I found it VERY hard to get back on.
  20. Doug, The ABS additions are terrific,...

    Doug,
    The ABS additions are terrific, contribution made. These are better for many uses that the BMW source drawings. Everyone should print a copy.
    Roger
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    The tests and measurements showing how the...

    The tests and measurements showing how the Motronic learns about fueling and "adapts" it back to stock (Mixture Adaptation) runs for several pages. That explanation might be hard to follow, partly...
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    The only way for the RID to stay on is if the...

    The only way for the RID to stay on is if the Motronic relay stays on. That would also mean you Mitronic is staying powered.

    That might mean one of three things:

    1) Sticking relay contacts....
  23. You would think that I equals V divided by R but...

    You would think that I equals V divided by R but many of the loads don't have a "resistive" property.

    Therefore, the better approach is to attach a milliampere meter in series with the battery...
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    +1, that's what happened to my starter. Good...

    +1, that's what happened to my starter. Good article and photos.
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    It seems to me that the two most likely cause of...

    It seems to me that the two most likely cause of these problems are:

    1) A bad battery - you've checked that

    2) A bad starter - magnets sometime separate inside the starter case and internal...
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