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Thread: 45MPH MAX r12-x

  1. #1

    45MPH MAX r12-x

    ok here the deal, i have a 03 honda r12-x and it will to 45MPH TOPS, sometime feels like it has a miss, and the enigine seems to shake more then it should

    i have tested the Waste gate actuator, tried new Knock sensor, also tried new waste gate solinoid, still nothing has worked, also my boost line has the small brass re-stricter in it. so my question is whats next to try? trubo still seems to be spining free i can still get it to bark when on the trailer backed into water!

    PLEASE [email protected]!

    edit: rpm will not go past 4850!


  2. #2

    Join Date
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    I have the same problem but I have an R-12, no turbo
    rpms will not exceed 5850

    somebody help!!!

  3. #3
    ive been email Ramon @ H20extreme, he has been emailing me and its past 10:30 at night here has given me a few suggestions and one that i have to try tomorrow im done for the night! ill elt you know what we find out, and 5850RMPS is close to max of 6200?

  4. #4
    jlfx car audio's Avatar
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    What rpm r u seeing on. The 12x?
    U should be turning 6000-6150+- @ 12-13 psi.
    If ur only turning 56-5800 it could be only building 7-9psi.
    I would pull off the vac line going to wga. This should Max ur boost out to 16-18psi give 64-6500 rpm for a few seconds then trigger fi code #45. If it does this u have eliminated about 30 things u will not have to check

  5. #5
    Quote Originally Posted by jlfx car audio View Post
    What rpm r u seeing on. The 12x?
    U should be turning 6000-6150+- @ 12-13 psi.
    If ur only turning 56-5800 it could be only building 7-9psi.
    I would pull off the vac line going to wga. This should Max ur boost out to 16-18psi give 64-6500 rpm for a few seconds then trigger fi code #45. If it does this u have eliminated about 30 things u will not have to check
    Put new plugs in today and I'm seeing 5950 rpm"s so what should I do to get the other 200rpm?

  6. #6
    jlfx car audio's Avatar
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    [QUOTE=jlfx car audio;
    I would pull off the vac line going to wga. This should Max ur boost out to 16-18psi give 64-6500 rpm for a few seconds then trigger fi code #45. If it does this u have eliminated about 30 things u will not have to check[/QUOTE]


    Do this test first then I can help more

  7. #7
    i have not tried the test yet have not had time, it will run to roughly 6010RPM on the digital gauge, is that about right or am i missing a few RPM?

  8. #8
    jlfx car audio's Avatar
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    Nit far off at all .

  9. #9
    supermac's Avatar
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    if it is hot, thats an ok rpm.

  10. #10
    otnielarencibia's Avatar
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    Quote Originally Posted by motoman006 View Post
    ok here the deal, i have a 03 honda r12-x and it will to 45MPH TOPS, sometime feels like it has a miss, and the enigine seems to shake more then it should

    i have tested the Waste gate actuator, tried new Knock sensor, also tried new waste gate solinoid, still nothing has worked, also my boost line has the small brass re-stricter in it. so my question is whats next to try? trubo still seems to be spining free i can still get it to bark when on the trailer backed into water!

    PLEASE [email protected]!

    edit: rpm will not go past 4850!
    In what specific hose does the brass restrictor go in?

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