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  1. #1

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    rxpx 2012 missing 1 bar of boost at wot

    Hello,

    my friend has a 2012 rxpx 40 hours on it. with the riva speed overide module.

    when we ride @ wot we mis one bar of boost.. before it was full..
    also seems to mis a couple of rpms.. 7600 is max.. some time when opening throtle i see 7740 as max.. then going down back to 7600 7640.. am i missing something?


  2. #2
    stuckmoto's Avatar
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    Check slip on supercharger.

  3. #3

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    how much lb should it be set @?
    al hoses are tight no signes of leaks.

    thanks

  4. #4
    Sanfish's Avatar
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    Quote Originally Posted by spacerrr View Post
    how much lb should it be set @?
    Officially, between 6 and 9 ft/lbs. However, most setup their X charger 1 to 4 ft/lbs higher to follow the 1ft/lbs per 1psi of boost.

    As for your issue, it could be so many things. But without knowing if throttle body is actually getting 100% WOT, everything else you try will be pointless. Do you have someone you know with a CanDoo Pro or BUDS?

  5. #5
    dpracing's Avatar
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    +1 on slip ck.

  6. #6

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    yes i have a candoo.. i will check the throtle if it opens wide. thanks for the advice.

  7. #7
    NightmareRXT-x-AS's Avatar
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    mine did exact same thing. intercooler on way out..

  8. #8

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    Today I noticed the boost gauge went from full and then when I was at top speed it dropped to 1 bar missing. I was running fast with my RPM's at 8080 or 8100. My boat only has 10 hours on it, do you think it could be the governor on it, I have an R&D boost box and riva gen III intercooler and R&D surge protector. There's no codes or anything and the boat runs great. Do you think it could be one of the govenor's form the ECM lowering the boost once at full WOT?

  9. #9
    Check for a tar like stuff in the big hose going into the throttle body.

    Andy

  10. #10
    surferd15's Avatar
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    Quote Originally Posted by sassy6group View Post
    Today I noticed the boost gauge went from full and then when I was at top speed it dropped to 1 bar missing. I was running fast with my RPM's at 8080 or 8100. My boat only has 10 hours on it, do you think it could be the governor on it, I have an R&D boost box and riva gen III intercooler and R&D surge protector. There's no codes or anything and the boat runs great. Do you think it could be one of the govenor's form the ECM lowering the boost once at full WOT?
    Its the limiters...R&D boost box is garbage just like the Riva Scom. Your only gonna get 69/70 mph out of it and 8100 rpms might back down to 8060.

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