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  1. #1
    sportster's Avatar
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    Supercharger Upgrade

    I Know This Is Very Redundant But I Have To Ask Before I Give Jerry More $.

    Which Way Will Give The Best Performance:

    Green Wheel Or Riva Sd (s3) Wheel & Housing?
    Best To Use The Fuel Pressure Regulator & Stock Injectors?

    I Was Thinking The S3 With The Fuel Regulator

    Currently On My Ski:
    External Intercooler (silicone Intakes)
    Shorty Waterbox
    Opas Block Offs
    Stock Ecu
    Riva Stage 1 Kit (with Cold Air Intake)

    Run In Alberta, 2500', Lake Temp Between 55 - 70*f

    Always Appreciate Your Help
    Thanks


  2. #2
    JFizzleJR's Avatar
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    If you plan on upgrading to a Riva ECU, it would be wisest to stick with injectors rather than a fpr. The stage III wheel is a big improvement over the green wheel.

  3. #3
    Get the RS3 wheel with the RRFPR and stick with the stock injectors. From the reading I've done, the S3 wheel is a great improvement over the greenwheel. I will probably be doing this myself this summer, and I am in conditions similar to your own....1,150ft above sea level and never see lake temps above 70*F during the summer. Being that your another 1K ft. above me, dialing in your RPM may be a little different, i.e. prop pitch or venturi nozzle ring size.
    Last edited by RXP-REX; 02-23-2008 at 09:25 PM.

  4. #4
    ISLAND RACING seadoo951's Avatar
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    Why do you say to stay with injectors instead of FPR? I am deciding which route to take on my skis.

    Quote Originally Posted by JFizzleJR View Post
    If you plan on upgrading to a Riva ECU, it would be wisest to stick with injectors rather than a fpr. The stage III wheel is a big improvement over the green wheel.

  5. #5
    FIRED!!! JP's Avatar
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    I vote S-3 and injectors

    ummm, won't he start running lean with 38s?
    The S-3 needs more fuel than that doesn't it?

    42s with stock ECU
    50s with RIVA ECU

    JP

  6. #6
    Quote Originally Posted by JP View Post
    ummm, won't he start running lean with 38s?
    The S-3 needs more fuel than that doesn't it?

    42s with stock ECU
    50s with RIVA ECU

    JP
    With the stock 38's and the RRFPR he won't. He just has to set it to compensate for the increased boost and it will add more fuel. Best part about the RRFPR with the stock 38's over the 42# injectors is that he won't be running rich in the low and midrange.

  7. #7
    FIRED!!! JP's Avatar
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    okeedokee...

    JP

  8. #8
    West Texas RXP skoepp's Avatar
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    Quote Originally Posted by RXP-REX View Post
    With the stock 38's and the RRFPR he won't. He just has to set it to compensate for the increased boost and it will add more fuel. Best part about the RRFPR with the stock 38's over the 42# injectors is that he won't be running rich in the low and midrange.
    thats what I will be doing but with rude charger. (stock ecu)
    As far as which sc. I have no experience with the green wheel but have heard nothing but good reports about it. Hands down i would say it is your best drop in wheel from what i have seen reported. I am running a S3 and can say that you will not be disapointed in the preformance. Totally different ski going from Stock to S3.
    If you can afford the S3 then you want go wrong. I will say that If i were you, I would put some riva pro block offs or better yet put on some Race engineering Block offs. You will need them with the new speeds you will be running. The hook up with riva grate and blocks is so much better.
    Last edited by skoepp; 02-24-2008 at 01:48 AM.

  9. #9
    JFizzleJR's Avatar
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    Quote Originally Posted by seadoo951 View Post
    Why do you say to stay with injectors instead of FPR? I am deciding which route to take on my skis.
    I said injectors if he's planning on the Riva ECU later. This is because the Riva ECU needs 50s either way therefore the RRFPR would be useless at that time. 2 sets of injectors (42s and 50s) would be cheaper than buying the FPR and then needing to buy 50s in the future.

  10. #10
    Quote Originally Posted by skoepp View Post
    I have no experience with the green wheel but have heard nothing but good reports about it.


    I am running a S3 and can say that you will not be disapointed in the preformance. Totally different ski going from Stock to S3.
    If you can afford the S3 then you want go wrong.
    +1 on the first part.

    And the second part makes me anxious to get my S3 SC this year.

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