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  1. #1
    Chris0060's Avatar
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    BOOST #'s in Heat & Humidity

    I'm running the ET 137 Wheel and as of this past month, boost #'s are not going above 11.. In May I was seeing close to 14....

    I checked all couplers and IC blockoff and no leaks detected on the hose unders throttle. Before I pull the charger and check slip, I just want to see what others are seeing.. Its been in the 90's and pretty sticky up here on my last few rides. I have also been in some rough waters a few times. So I am not sure if I need to shim the charger or...... Just wait til October for better #'s. First season with this wheel.

    Any input?


  2. #2
    Eric Ocman's Avatar
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    Quote Originally Posted by Chris0060 View Post
    I'm running the ET 137 Wheel and as of this past month, boost #'s are not going above 11.. In May I was seeing close to 14....

    I checked all couplers and IC blockoff and no leaks detected on the hose unders throttle. Before I pull the charger and check slip, I just want to see what others are seeing.. Its been in the 90's and pretty sticky up here on my last few rides. I have also been in some rough waters a few times. So I am not sure if I need to shim the charger or...... Just wait til October for better #'s. First season with this wheel.

    Any input?
    RPM's and Im assuming Riva ECU?

  3. #3
    Chris0060's Avatar
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    8120... Stock ecu...

  4. #4
    Eric Ocman's Avatar
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    Quoted "This CNC machined impeller makes 12.5+ lbs of boost at 8100 rpm and an incredible 13.5+ lbs at 8500"

    That charger is not rated for 14lbs even at 8500. If you saw 14lbs @8100 more than likely the gauge was off.

  5. #5
    West Texas RXP skoepp's Avatar
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    Quote Originally Posted by Chris0060 View Post
    I'm running the ET 137 Wheel and as of this past month, boost #'s are not going above 11.. In May I was seeing close to 14....

    I checked all couplers and IC blockoff and no leaks detected on the hose unders throttle. Before I pull the charger and check slip, I just want to see what others are seeing.. Its been in the 90's and pretty sticky up here on my last few rides. I have also been in some rough waters a few times. So I am not sure if I need to shim the charger or...... Just wait til October for better #'s. First season with this wheel.

    Any input?
    14 seems a bit high for that charger on stock ecu.
    What temps in may compared to now?
    What is difference in sc slip from may to now?

    It is possible to see some boost loss from winter to summer.

  6. #6
    formerly Gold06RXP Turbo Nick's Avatar
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    Im down about 1.5 PSI in the heat here compared to cooler weather in the spring. Check your slip. If everything checks out its just the weather

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