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  1. #1
    groves, texas jclc43837's Avatar
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    ?s on x-charger on a rxp

    so i have been reading this forum and i cant figure this out i want to put a x-charger on my rxp with 42#injectors, but this is where im confused some are saying to use a rrfpr and some dont. so do you have to use a rrfpr.


  2. #2
    Water4fire's Avatar
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    If you are gonna have everything else stock on your 215RXP then the 42's will do just fine.

    The problem is when you go 4inch intake and a External IC. Then you will need to raise your fueling just a bit with the RRFPR.


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  3. #3
    Dave Sharp dav_dman's Avatar
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    Quote Originally Posted by Water4fire View Post
    If you are gonna have everything else stock on your 215RXP then the 42's will do just fine.
    jc, waterfire means leave intake and intercooler stock..you're fine with the free flow in your sig. helps get the heat out, even.

  4. #4
    ADAMBOMB's Avatar
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    Quote Originally Posted by jclc43837 View Post
    so i have been reading this forum and i cant figure this out i want to put a x-charger on my rxp with 42#injectors, but this is where im confused some are saying to use a rrfpr and some dont. so do you have to use a rrfpr.
    You will need a rrfpr if you change out your intercooler.
    you will like the upgrade im happy but now i want a intercooler

    good luck

  5. #5
    groves, texas jclc43837's Avatar
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    Quote Originally Posted by Water4fire View Post
    If you are gonna have everything else stock on your 215RXP then the 42's will do just fine.

    The problem is when you go 4inch intake and a External IC. Then you will need to raise your fueling just a bit with the RRFPR.


    .
    yea all im going to do is put a 4in fizzle intake, 15/20 prop, grate,
    x-charger, 42#injectors, ride plat mod, and wedge over the winter
    im hoping to get 75+ mph out of these mods

  6. #6
    ADAMBOMB's Avatar
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    Quote Originally Posted by jclc43837 View Post
    yea all I'm going to do is put a 4in fizzle intake, 15/20 prop, grate,
    x-charger, 42#injectors, ride plat mod, and wedge over the winter
    I'm hoping to get 75+ mph out of these mods
    I'm thinking 72.5 MPH.to 73 or so

    I don't have any free mods(reverse bucket mod,ride plate holes filled and so forth). I also have off power steering still as well. And I'm in south Florida hot weather. and over weight hahaha

    good luck you will love the new acceleration!

  7. #7
    blowbyu's Avatar
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    Quote Originally Posted by jclc43837 View Post
    yea all im going to do is put a 4in fizzle intake, 15/20 prop, grate,
    x-charger, 42#injectors, ride plat mod, and wedge over the winter
    im hoping to get 75+ mph out of these mods
    You should be 74.5 plus easy....

  8. #8
    You absolutely need the intercooler. You will break 75 with the intercooler.

    We have that very setup on my significant other's ski (rXptina) and she runs a solid 76.

    Check out her sig.

    You said you want 75+
    If you want to consistently run 77 or so, go Rude1. The X charger will get you a mix of speeds in the 74-76 range. The Rude1 will get you a solid 2mph beyond that and better acceleration.

    Just my .02 but the intercooler is a must no matter what and then you need an rrfpr.

  9. #9
    Banned User
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    ran the X charger, 42's and 4" kanaflex intake most of the summer with riva exhaust and GH waterbox, free mods, and 15/20 prop on my RXT and ran 74mph.

  10. #10
    mbaseball3's Avatar
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    what about an x model fuel pump instead of the rrfpr? and of course the 42's. basically makes in an x in an rxp correct?

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