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  1. #1

    x charger question

    I will soon be buying the x charger for my 08 rxp and I dont know what size injectors to use the 42 or the 38 I always thought that you used the 42 but now im reading that the stock 38 will work I will not be running an ect ic so please help me out guys and point me in the right direction.


  2. #2
    mac_man_luke's Avatar
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    Id run 42s if you have a 4" air intake, 38s if you have stock air intake.

  3. #3
    pass1's Avatar
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    Don't know about running 38# but...
    with stock 215 ecu, x-charger and 42's (if everything esle is stock), you will be a tad rich from idle to wot, running about 11.2/11.3 at wot.
    Those were my #

  4. #4
    well im gonna put the riva filter on it so you dont think the 42 wil be too much and make it run rich

  5. #5
    monaroman76's Avatar
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    Quote Originally Posted by 08rxp View Post
    well im gonna put the riva filter on it so you dont think the 42 wil be too much and make it run rich
    It may be slightly rich, but a bit rich is better than a bit lean.

    Dont use the Riva power filter, go with a 4" setup. Its much better.

  6. #6
    pass1's Avatar
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    Quote Originally Posted by monaroman76 View Post
    It may be slightly rich, but a bit rich is better than a bit lean.

    Dont use the Riva power filter, go with a 4" setup. Its much better.
    +1 and probably cheaper too

  7. #7
    Moderator Snoman's Avatar
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    Quote Originally Posted by monaroman76 View Post
    It may be slightly rich, but a bit rich is better than a bit lean.

    Dont use the Riva power filter, go with a 4" setup. Its much better.
    +1...

    Quote Originally Posted by pass1 View Post
    +1 and probably cheaper too
    +2...

  8. #8
    Will it not hurt the motor to run a little rich all the time

  9. #9
    pass1's Avatar
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    It depends ''how rich'' but in your case I would not worry at all. I'm running the same setup as you have minus the intake so you are gonna be closer to be ''perfect'' than me and I havent hurt mine yet.

  10. #10
    How Many hours do you have on ur x charger

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