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  1. #1
    Matatan tocullo's Avatar
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    Bigger charger ?? Plus Rotax ecu?

    The time has come to get a bigger charger. I have many ?? Please help!! And thanks!
    On my sig you can see all the mods I have right now. But I already have a Rotax ECU 8600 rpm, VTU and a speedfreaks rideplate this parts are ready to install.

    What is the biggest charger I can run with this set up?
    What size injectors would I need?
    The ecu was map for 42 lb injectors can I run bigger ones with them?
    What else would I need to be on the safe side?

    Thanks for your help!!
    Andy


  2. #2
    richrxp's Avatar
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    You can run minirude or 3Rude.
    I have the same ecu,with bosch 50's injectors.
    Look in my signature ,i'm running the 3Rude and have no problems.
    Before i ran the minirude also without issues.
    You can tune your afr's with your rrfpr,.

  3. #3
    Matatan tocullo's Avatar
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    Quote Originally Posted by richrxp View Post
    You can run minirude or 3Rude.
    I have the same ecu,with bosch 50's injectors.
    Look in my signature ,i'm running the 3Rude and have no problems.
    Before i ran the minirude also without issues.
    You can tune your afr's with your rrfpr,.
    Nice!! That's what I wanted to hear! I was hoping that I could run either rude3 or ET 70-145. I was also wondering which one of the two is better or safer to run with my setup?

    Thanks

  4. #4
    richrxp's Avatar
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    I have no experience with the et charger,but the 3 Rude works fine,and holds the slip for a long time.
    I use the new model rotax clutch washers on the 3 Rude ,so nu clutch issues for me.
    The 3 rude gives massive power ,i'm very happy with the charger.
    Next mod ,i'm gonna do is raising the rev limiter to 8850 rpm, by V-tech.


    Quote Originally Posted by tocullo View Post
    Nice!! That's what I wanted to hear! I was hoping that I could run either rude3 or ET 70-145. I was also wondering which one of the two is better or safer to run with my setup?

    Thanks

  5. #5
    Matatan tocullo's Avatar
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    Quote Originally Posted by richrxp View Post
    I have no experience with the et charger,but the 3 Rude works fine,and holds the slip for a long time.
    I use the new model rotax clutch washers on the 3 Rude ,so nu clutch issues for me.
    The 3 rude gives massive power ,i'm very happy with the charger.
    Next mod ,i'm gonna do is raising the rev limiter to 8850 rpm, by V-tech.
    How much boost will it produce at those rpms? How obout your intake manifold?

  6. #6
    richrxp's Avatar
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    I don't have a boostmeter,but it should be around 17- 18 psi.
    The intake manifold shouldn't give any problems,others have done this before without to much problems.
    But it's plastic so you never know!

  7. #7
    Matatan tocullo's Avatar
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    No one else!!

  8. #8
    ou812's Avatar
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    A 2rude would fit the bill with the 8600 ecu & 50's and easier on the clutch... 14.5+ psi @ 8500 rpm.
    I'm seeing 13.9 - 14psi & 8260rpm with my rotax 8300 stock class ecu.

  9. #9
    Matatan tocullo's Avatar
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    Quote Originally Posted by ou812 View Post
    A 2rude would fit the bill with the 8600 ecu & 50's and easier on the clutch... 14.5+ psi @ 8500 rpm.
    I'm seeing 13.9 - 14psi & 8260rpm with my rotax 8300 stock class ecu.
    I like your numbers, but if I'm able to run more boost with out mayor modification to the engine, I guess that's the route I'll be tacking. Go big or go home!! If you know what I mean! Lol

  10. #10
    Mtuned's Avatar
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    Trying to run me down i see!

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