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    RXP 2004 supercharger upgrade question

    I have a 2004 RXP with a stage one kit and a pump wedge at 150 hours. I am sending the supercharger off for a rebuild and was wondering what the next step would be for a performance upgrade. If I went with the Engine-Tech ET 127 Drop In Wheel or the gen 2 supercharger impeller would I need an injector upgrade. Also, how much more performance would that give me/which one would be better.


  2. #2
    JFizzleJR's Avatar
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    Quote Originally Posted by Buggs248 View Post
    I have a 2004 RXP with a stage one kit and a pump wedge at 150 hours. I am sending the supercharger off for a rebuild and was wondering what the next step would be for a performance upgrade. If I went with the Engine-Tech ET 127 Drop In Wheel or the gen 2 supercharger impeller would I need an injector upgrade. Also, how much more performance would that give me/which one would be better.
    ET 127 would be better. You might need add 42# injectors to stay in a safe AFR range. I'm sure someone with experience with that setup will chime in shortly.

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    AtoMIC_OraNGE greenbullet's Avatar
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    yes you will need 42 injector to run either of those wheels but the ET127 would be my choice. both you can find in jerrys store...

  4. #4
    Thank You for the advice. What do you think about a X supercharger with 42 injectors ,I did not want to put a different impeller if it was not necessary.

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    AtoMIC_OraNGE greenbullet's Avatar
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    X is good if you want to go with a bigger charger in the future. But personally I'd rather 127 over an x. It's very snappy and light too so less Maintience

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