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  1. #1
    benobo's Avatar
    Join Date
    Mar 2010
    Langwarrin , Australia

    05 Challenger Mod : X charger , 42lbs injectors and RXP X prop ... Help please

    Hi peeps I'm throwing the mentioned in my jet boat , please advise if the RXPX prop is 15/22 pitch and also if I change to this set up do I have to re map the ECU to suit the 42lbs injectors ?? Anyone done this mod ?? Worth it ???

  2. #2
    Big K's son KeithKman's Avatar
    Join Date
    Dec 2006
    Southern California
    I have no experience with boats.

    I'm waiting to install the x-charger on my 2004 RXP. No remapping required. I've talked to JD1 and he said 42's are not needed when running the x-charger with the 215IC with the stock intake or 3inch or 4inch intake. 38's are fine.

    As for the prop, I know on the skis the 14/19 seems to be the hot ticket.

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