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Thread: removing the 180kmph restrictor on jap imports

  1. #41
    Not been here that long Peter Webster's Avatar
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    Bikes:
    CBR400 NC29

    Default Re: removing the 180kmph restrictor on jap imports

    Quote Originally Posted by gothy View Post
    CDI end resistor mod. PIC 1

    at the CDI or ECU , you need too source two wires. First the BROWN/BLUE STRIPED wire cut it.
    Then a BLACK/WHITE wire you need too remove a small amount of the plastic insulation.
    Then solder the 2k ohm resistor, from the bared BLACK/WHITE wire too the BROWN/BLUE STRIPED wire at the CDI END. then away you go

    (this mod wont blow the fuse as its on the other side of the wiring)
    After doing the mod this way my temperature gauge and fan stopped working. How did I manage that?

  2. #42
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    Default Re: removing the 180kmph restrictor on jap imports

    How to do it

  3. #43
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    Default Re: removing the 180kmph restrictor on jap imports

    Quote Originally Posted by ariamacha View Post
    i just joined this forum, i have a jap bike that has the limiter, but im blocked from viewing the images here.what to do now?

    Me too!

  4. #44
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    Default Re: removing the 180kmph restrictor on jap imports

    Even i need help with my 1998 VFR 800 Fi which is japanese locked.

  5. #45
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    Default Re: removing the 180kmph restrictor on jap imports

    very helpful

  6. #46
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    Default Re: removing the 180kmph restrictor on jap imports

    good

  7. #47
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    Default Re: removing the 180kmph restrictor on jap imports

    can you please elaborate on the 3rd step... please

  8. #48
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    Default Re: removing the 180kmph restrictor on jap imports

    if the disc is removed... will it have any undesired consequences ??

  9. #49
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    Default Re: removing the 180kmph restrictor on jap imports

    awesome post... you are a saviour!!

  10. #50
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    Default Re: removing the 180kmph restrictor on jap imports

    great

  11. #51
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    Default Re: removing the 180kmph restrictor on jap imports

    very helpful

  12. #52
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    Default Re: removing the 180kmph restrictor on jap imports

    Same here...

  13. #53
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    Default Re: removing the 180kmph restrictor on jap imports

    can this be done on 2005 CBR1000RR??... jap import

  14. #54
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    Default Re: removing the 180kmph restrictor on jap imports

    i have a 2005 jab CBR1000RR!! please help me with the 3rd step...

  15. #55
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    Default Re: removing the 180kmph restrictor on jap imports

    true

  16. #56
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    Bikes:
    CB400 Super Four 92

    Default Re: removing the 180kmph restrictor on jap imports

    Quote Originally Posted by gothy View Post
    Hey guy's,
    This probably wont apply to anyone on here (it might 1% chance).
    At least it might get seen here (unlike on my forum)

    How to Remove the 180 kmph speed restrictor on japanese import bikes.


    Because Japanese bike laws are very different from our own, they have a top speed restiction at 180kmph or 112MPH.
    This is quite easy to bypass.

    Basically their is a disk inside the speedometer that rotates with the speedo needle, so when it hits 180kmh it alters the ignition timing on 2 cylinders, so it cannot go faster than 180.

    There are several ways to remove it, just choose which you prefer.

    1. The easiest but most expensive way is to fit a MPH converter, around 30, from a local bike shop, M&P direct, or Demon Tweeks.

    2. Fit a resistor in the circuit, this I will explain in the next post (2 ways). around 1 - 2 in parts.

    3. Remove the disk inside the speedo, or bend the metal tab/electrical connector. ( if you can get inside, its quite difficult!) FREE.

    4. buy for 40+ a box that fits in at the CDI end of the loom, with a resistor inside, from a shop, but their is no point as you can do it yourself for cheaper, using meathod no2.

    Disclaimer: This site and its members will not be liable for any direct, indirect or consequential loss or damage to you or your property due to information obtained from or in connection with our website, whether arising in tort, contract, or otherwise - including, without limitation, any loss of profit, contracts, business, goodwill, data, income, revenue or anticipated savings.

    Realise I may be clutching at straws as this is a very old post but I'll send it anyway.

    I've got a cb400sf 92 when I brought it, it wouldn't go above 50mph I changed the ECU now it goes 70-75 max which is still nowhere near what it should be doing, so I'm now thinking it has a rev limiter on it.

    I've changed the Speedo for a KOSO DL-03SR Silver Multifunction Gauge as it had a cheap Chinese one on, so I'm thinking the first mod won't work as it's a digital Speedo?

    Just looking for a helping hand with getting the rev limiter off, I've already spent too much money on it putting it into shops who claim they know what their doing to only get it back the same with a big bill attached.

    I'm at my Witt's end with the thing.

    Any help would be mostly appreciated.

  17. #57
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    Default Re: removing the 180kmph restrictor on jap imports

    Quote Originally Posted by gothy View Post
    Inside the rear of the speedo, their is a block connector on the rear.
    (this applies even if mechanically driven), but will be slightly different for every model.
    PIC 1

    You basically unplug this and fit a resistor mod. which is as follows.

    PARTS.
    Small female spade connectors,
    some wire,
    some heat shrink,
    and a 2k OHM resistor.

    PIC 2 is the mod.

    It connects to the two side connectors in the plug,
    you dont connect the green middle wire,
    just connect the orange with blue trace to one end.
    and connect the black with brown trace to the other end.

    here's what it should look like now.
    PIC 3

    There is another way of doing it, that saves the fuse from blowing causing the low rev misfire, (it wont go for a long time though).
    You have to fit the resistor mod at the CDI end.
    Sorry for the silly question but how do I view the pics

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