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  1. #1

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    Problems with x charger RRFPR LC 1 install ----Help!

    I am having a problem with my LC1. I upgraded to an x charger and installed a RRFPR and a LC1 to tune and monitor AFR's.

    I have done a heater cal and a free air cal two or three times and the result is always the same. I get good afr numbers until over 5000 RPM's (where the boost starts coming in)

    RRFPR is set to 60PSI while at idle.

    Over 5000 RPM the AFR climbes to 22.4 and then goes to error mode(flashing 7.4). The error is #8 which is a timing error usually caused by over heated sensor or bad sensor.

    I have the o2 sensor in the exhaust manifold and I am using the 12mm to 18mm Innovate adaptor/heatsink. I know the sensor cannot be overheating because many people are using this location without a heatsink without problems.

    The LC1 is new and I have been having this problem since the install.

    Has anybody had this problem?


  2. #2
    speedskixp's Avatar
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    It is possible that between the thickness of the manifold and the adapter that the sensor may be too far out of the exhaust flow. This is just a guess. Even without the adapter the sensor is out of the direct flow of the exhaust.

  3. #3
    richrxp's Avatar
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    It looks like a bad sensor,above 5000 rpm you should be very rich i think around 10 afr with the setting at 60.
    I,m running 3 rude and set at 50 psi idle,if i set idle at 60 i'm around 10 and low on rpm's due to running rich.
    Above 5000 rpm boots starts to rise you'r fuelpressure.
    Must be a bad sensor imo.

  4. #4

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    Try it without the heat sink. But sounds like something else maybe. I swear there was just another person having the same error code like a day or 2 ago.

  5. #5
    pass1's Avatar
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    REMOVE THE ADAPTER, just went trough the exact same issue with mine. I did removed the adapter and drilled to 18mm and rethreaded the manifold (18x1.5) and voilà, problem solved.

  6. #6
    Work Harder, Millions on Wellfare Depend On Us! ultramaxracing05's Avatar
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    TTT anyone else running this adaptor?
    I just ordered. has anyone had problems with just the O2 sensor being in a hot place? is the adaptor/heatsink needed?

  7. #7
    MSRXP's Avatar
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    The heat sink is not needed. I am using the innovate 12mm to 18mm extension. It allows you to position the sensor any way you see fit. Tapped the manifold with a 27/64 bit and tapped it with a M 12 x1.25. Works great.... This way, you don't have to worry about hitting the water jacket.

    Click image for larger version. 

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  8. #8

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    I was at 54 PSI at idle and I raised it to 60 to see what would happen and i lost 50-100 RPM. I do think that I am rich at 60.

    I wish it were as simple as removing the adapter but to do so I would have to remove the exhaust manifold and then drill a larger hole off center.

    I used the adapter to make sure I did not hit the waterjacket.

    The sensor would have to have been bad to start with because it was new, possible?

  9. #9
    Sturm215's Avatar
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    Quote Originally Posted by Bama View Post
    I was at 54 PSI at idle and I raised it to 60 to see what would happen and i lost 50-100 RPM. I do think that I am rich at 60.

    I wish it were as simple as removing the adapter but to do so I would have to remove the exhaust manifold and then drill a larger hole off center.

    I used the adapter to make sure I did not hit the waterjacket.

    The sensor would have to have been bad to start with because it was new, possible?
    I didn't like the adapter either I took it off and drilled for 18mm

  10. #10
    oz_speed's Avatar
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    Is it better to locate the probe in the manifold or the J pipe. It looks easier to drill the manifold flange than cut and weld in to the J pipe.

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