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  1. #1
    Jarrett's Avatar
    Join Date
    Apr 2005
    Waxahachie, TX

    What is the optimum RPM range for a stock ECU RXP-X?

    I see some people say 8060 and some people say 8180. I'm trying to figure out what is the best RPM to shoot for on the stock ECU'ed RXP-Xs. Anyone have any evidence of what is best on this one? Thanks in advance.

  2. #2
    jwade's Avatar
    Join Date
    May 2007
    Clarksville, Tn
    Closer to 8000, the better. Over 8100, timeing starts to become retarded.

  3. #3
    MPower's Avatar
    Join Date
    May 2005
    Raleigh, NC
    This is a big debate. Lots of people say 8000 but some of the best tuners say 8140+. I always saw my best speed with the latter. Only evidence I have for you is that Erik at SpeedFreeks is one of the best in the business and he likes to see the higher number too.

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