Thread: OX66 RPM

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  1. #1
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    OX66 RPM

    Can someone tell me the max RPMs a 250 HP OX66 with Phase III kit safetly run?

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    #2
    I believe the limiter is 6250/unless it is unplugged. Wayne or Mat should be along to let you know where it should run. I remember being higher than I thought with the supporting mods. Cj
    2002 X19 200HP OX66 HO Vmax,HPDI lower, it lives, thanks Hydro Tec.

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    #3
    The limiter is at 5750 right now. I think the gray jumper can be cut at the ECU to get more RPMs. Just didn't want to over do it.

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    #4
    Quote Originally Posted by harleyrs View Post
    The limiter is at 5750 right now. I think the gray jumper can be cut at the ECU to get more RPMs. Just didn't want to over do it.
    I’m pretty sure the factory limiter is around 6100. Most I’ve talked to run them around 6700.

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    #5
    Quote Originally Posted by allstock View Post
    I’m pretty sure the factory limiter is around 6100. Most I’ve talked to run them around 6700.
    6700?! Is that a mistype? I've talked to Wayne and Matt on several occasions and they've never mentioned running one that high.
    Lake&Bay Boca
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    #6
    I don't guess either one of them want to commit.

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    #7
    Quote Originally Posted by ClarkBird View Post
    6700?! Is that a mistype? I've talked to Wayne and Matt on several occasions and they've never mentioned running one that high.
    No that is from two owners with 3.1ox66 ported with phase 3 kit. 6700 shouldn't hurt it. And yes factory limiter is low 6's not sure where everyone I've owned I've disabled. Not that it matters they don't make any power past 6k stock anyhow lol.

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    #8
    Mine limits at 6250 per my digital tach and upper 6's is what I remember also being told. CJ
    2002 X19 200HP OX66 HO Vmax,HPDI lower, it lives, thanks Hydro Tec.

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    #9
    I guess I could see that with the big throttle body and spacer. I get nervous running mine at 6k.
    Lake&Bay Boca
    SHO