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  1. #1

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    07 215 riva stage 1 swapping out stock charger for an x-charger

    Like the title says, I have a 07 riva stage 1 ski (14/19 solas, riva grate, 3" riva intake, and pump wedge) everything else is stock. Stock intercooler and stock exhaust. Will I need to do any other upgrades when I bolt on the x-charger or will the stock fuel system be sufficient? Some say you need 42lb injectors and while other's say you don't? How much of a performance boost should I expect with the x-charger alone? Thanks.


  2. #2
    rxpstage2+ rw40426's Avatar
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    I have a 07 215 and i put x charger 42's and ex. intercooler and it was running real strong. not quite sure if you will need 42's with out ex. intercooler but i think you can get by with 38's as long as you keep the stock intercooler. May be on the rev. limiter with the 14/19. If you're looking for an X charger and 42's i have them for sale just have not posted yet. send me pm

  3. #3
    PHONE BOY2369's Avatar
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    06 rxp

    I am running a x charger with a stock ic with 42s and everything in my signature and yesterday pulled a 76.8 mph at 11.2 psi.You will notice a LOT more power then the stock sc but you will need to get a 4 inch intake to feed that x more air.You will see about a solid 5 psi over the stock sc or more.

  4. #4
    PHONE BOY2369's Avatar
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    do you have a rxp or rxt

  5. #5

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    i have a rxp, and it's turning about 8150-60rpms right now as it sits stage 1. Running about 70mph. 69.7 was my best gps so far. Will I need a new prop for the x-charger?

  6. #6

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    Quote Originally Posted by calendine2369 View Post
    I am running a x charger with a stock ic with 42s and everything in my signature and yesterday pulled a 76.8 mph at 11.2 psi.You will notice a LOT more power then the stock sc but you will need to get a 4 inch intake to feed that x more air.You will see about a solid 5 psi over the stock sc or more.
    You are on a 12/17.5 prop? I thought the pitch is going to go up when you add more power. I'm at a 14/19 so I would need to go to a 15/20 correct? Someone replied I might be on the limiter with the 14/19. Are you on the limiter in your ski with that 12/17.5?

  7. #7

  8. #8
    home of the dislexic fingers breon's Avatar
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    i am running a s3 charger...see below exact set up .. x charger is a little more i am going to say yes on the 42 ..and 15 20 on the prop ..you probably wont quite turn it to the max until you get the intercooler..the stocker is restricting the flow..when you get an aftermarket intecooler.. then you are going to need even more fuel how is your choice..rfpr ..or tuner.. and repitch the prop..my s3 maxes the prop ..you should have a bit more...

    the acceleration diff is OMG

  9. #9
    PHONE BOY2369's Avatar
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    Quote Originally Posted by mustangtw View Post
    You are on a 12/17.5 prop? I thought the pitch is going to go up when you add more power. I'm at a 14/19 so I would need to go to a 15/20 correct? Someone replied I might be on the limiter with the 14/19. Are you on the limiter in your ski with that 12/17.5?
    NO i am not on the limiter my rpms are at 8160. you need to first put the x charger on and see where your rpms are at then go from there if you do need a repitch then send your prop to erik at speedfreeks.my ski pulls relly hard all through rpms and has one hell of a hole shot.

  10. #10
    t_hoang02's Avatar
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    If you run an aftermarket ic you would need a rrpfr... Stock x-models runs. 58psi stock...

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