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  1. #1

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    RXT Xcharger question

    Have a 05 RXT i have a riva stage 1 kit, PPG block offs, and i have a intercooler on the way and considering putting on a xcharger. If i put the Xcharger on i have done some reading i am unclear on if i will need bigger injectors or a Riva ECU. Can someone please point me in the right direction on this. I know my honda stuff but am lost when it comes to the fuel set up on the 4tec.

    Thanks

    Matt


  2. #2
    ctriverguy's Avatar
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    you are going to need more fuel.

    if you keep your ecu stock, I suggest going with rising rate fuel pressure regulator (RRFPR) sold in the store

    or hunt around and find an piggy back fuel controller.

    As for bigger injectors on your ecu, you can handle 42's but im not sure that set up will be enough.

    if you go riva ecu or rotax, you will need to get the appropriate injectors for each respective setup, (50s for the riva, and not sure for the rotax that year) but keep in mind there is more to it than just injectors for these set ups.

    rrfpr is the cheapest route though..if that helps

  3. #3

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    Quote Originally Posted by ctriverguy View Post
    you are going to need more fuel.

    if you keep your ecu stock, I suggest going with rising rate fuel pressure regulator (RRFPR) sold in the store

    or hunt around and find an piggy back fuel controller.

    As for bigger injectors on your ecu, you can handle 42's but im not sure that set up will be enough.

    if you go riva ecu or rotax, you will need to get the appropriate injectors for each respective setup, (50s for the riva, and not sure for the rotax that year) but keep in mind there is more to it than just injectors for these set ups.

    rrfpr is the cheapest route though..if that helps
    How dependable is a rrfpr?

  4. #4
    Whats that whistling noise? jtskier11's Avatar
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    Quote Originally Posted by V6speed04 View Post
    How dependable is a rrfpr?
    People seem to have good luck with them. Ive only put an hour on mine but no issues yet.

  5. #5

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    is it easy to set up the rrfpr?

  6. #6
    Whats that whistling noise? jtskier11's Avatar
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    Quote Originally Posted by V6speed04 View Post
    is it easy to set up the rrfpr?
    It actually was. Getting the old FPR off the pump was the most difficult part.

  7. #7
    agibbs's Avatar
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    I am using a RRFPR on my RXT, the Riva ECU would work as it is boost related, I just don't have the funds to swing the ECU, Valve train upgrade and 50's at the moment. That's the next upgrade though...*to be continued*

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