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  1. #1

    X-charger uprade

    Help guys. I took my RXT out yesterday water was 66 and air was 75 and I was only getting 9lbs of boost. Stock ecu and intercooler. Have the x-charger and Riva x charger upgrade. I have 4" custom air, Riva Valve train, Wedge, Catch can, Riva Grate, Gutted water box, Blow off valve. What Should I be getting for boost numbers and what do you think the problem could be?


  2. #2
    JFizzleJR's Avatar
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    What RPM are you running when you get the 9 psi reading? Is the gauge digital? Do the readings hold generally steady when at full throttle? Go over everything for boost leaks. Air intake, blow-off valve..do you have the stock intercooler in place? If not, check the IC block-off plate for leaks. What speed did you achieve?

  3. #3
    Site Admin Green Hulk's Avatar
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    The stock intercooler is very restrictive and will rob 1 psi of boost but your boost numbers seem abnormally low.

    Are you running a BOV?

  4. #4
    Thanks for responding. I was at 8100-8160 rpm and was going 73.5 max. My guage is not digital and holds steady at 9lbs . Yes have a blow off valve.

  5. #5
    Site Admin Green Hulk's Avatar
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    Remove the BOV. It's probably leaking boost!

  6. #6
    Thanks Jerry I will give it a shot and see what the numbers are.

  7. #7
    Jerry, what boost numbers should I be getting?

  8. #8
    Having Fun jp1300r's Avatar
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    Did you put new RIVA washers in with the SCer upgrade?

  9. #9
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by yoyo1 View Post
    Jerry, what boost numbers should I be getting?
    With the stock IC i'm not certain but you should see at least 12 psi.

  10. #10
    West Texas RXP skoepp's Avatar
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    With my stock T-X and minor mods, i saw between 9.9 to 10.6 psi. I agree with GH that with X upgrade you should be 12 psi minimum.

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