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  1. #1
    Laxcrazy23's Avatar
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    Mini Rude X vs Rotax

    Rebuilding the SC soon on my X and looking for some more power. What is the difference between the Mini Rude and the Rotax Wheel/Spacer? Do i need injectors, RRFPR, or anything else?


  2. #2
    Site Admin Green Hulk's Avatar
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    Big difference in performance. Mini rude will put out 14+ PSI. You will need a RRFPR to run it.

  3. #3
    richrxp's Avatar
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    I thought the mini rude would perform fine with some 50's injectors.
    No rrfpr,but i could be wrong.

    Adding a riva ecu which runs on 50's would do the job,but a valvetrain upgrade is needed.

    I was thinking of placing the mini rude,with the 50's only.
    No ecu change.

    Riva says you have to run the 50's with their x-charger upgrade,why would this not work for the minirude,don't think with the 50's he would run lean.

  4. #4
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by richrxp View Post
    I was thinking of placing the mini rude,with the 50's only.
    No ecu change.
    If you try this please measure the air fuel ratio and let us know how it works. Maybe AFR will be safe?

    Quote Originally Posted by richrxp View Post
    Riva says you have to run the 50's with their x-charger upgrade,why would this not work for the minirude,don't think with the 50's he would run lean.
    Because the mini rude puts out more boost than the Riva X model upgrade.

  5. #5
    richrxp's Avatar
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    Quote Originally Posted by Green Hulk View Post
    If you try this please measure the air fuel ratio and let us know how it works. Maybe AFR will be safe?



    Because the mini rude puts out more boost than the Riva X model upgrade.
    I know the minrude is more powerfull,only way to know is to install an afr bung and start measuring.

    Somehow i hoped somebody already tested this,we had some discussions on this topic earlier,and i know some guys are running them without the rrfpr.


    Making speeds of 75 mph on a rxt and a t-x.

    BUT I AGREE ITS SAFE TO KNOW THE AFR RATIO.

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