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Thread: rxp rev limiter

  1. #1

    rxp rev limiter

    so i just got my x charger in the mail for my rxp. I was curious about the boost it puts out vs the stock rxp and i came across this info:
    stock X model boost pressures 9.8 psi @8100 11.2 psi @8500 11.6 psi @8700 ...rxp is 7

    so is this saying that I will only be able to run 9.8 psi to my rxp without getting an ecu upgrade?

    i would like to run about 11 psi.


  2. #2
    jbombino's Avatar
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    You should get 10.5 PSI with 8100RPM, and with 8500RPM should be around 11 PSI.
    I have RR ECU (8500 RPM) and I have not see more 11PSI on the X-Charger.

  3. #3
    Quote Originally Posted by axl86 View Post
    so i just got my x charger in the mail for my rxp. I was curious about the boost it puts out vs the stock rxp and i came across this info:
    stock X model boost pressures 9.8 psi @8100 11.2 psi @8500 11.6 psi @8700 ...rxp is 7

    so is this saying that I will only be able to run 9.8 psi to my rxp without getting an ecu upgrade?

    i would like to run about 11 psi.
    You could also add the drop in ETEC137 wheel/spacer that will bring the boost up to 12psi at 8100.

  4. #4
    jpeconsult's Avatar
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    I am running the X SC at 10.9 and 11.0 with the 4" Kanaflex, XS IC, and 8100 ECU

  5. #5
    alright good deal

  6. #6

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    My liquid filled boost gauge was bouncing off 11 psi while bouncing off the rev limiter with mods listed in my sig... slip at 110 in/lbs

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