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  1. #1

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    Biggest SC with no RRFPR?

    I've been just a thread searcher for a while but nows the time for me to jump out there and ask for your help. I really want to make some big numbers with the rest of y'all but staying safe is more important to me.

    I've been lucky so far and have 46hrs on my stock washers and I want to pull my SC to change them. I figure if I'm going to pull the charger, why not put in a wheel or change it out completely, right?

    So here's my dilemma. I want to put in a bigger charger but I'd prefer not to mess around with a RRFPR setup and A/F ratios yet. If I need to upgrade the fuel, I'd rather just change out the injectors and feel safe with it. I now have a ext intercooler so I know that will probably limit my choices. What charger options do I have?


  2. #2
    masta2000's Avatar
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    i'd say s3 charger at about 10 psi with #42 injectors. i've been running mine for 40 hours no problem with riva pro intercooler. starts and runs like stock

  3. #3
    formerly Gold06RXP Turbo Nick's Avatar
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    Ya, stage 3 SC is as big as you can go without RRFPR.
    Quote Originally Posted by masta2000 View Post
    i'd say s3 charger at about 10 psi with #42 injectors. i've been running mine for 40 hours no problem with riva pro intercooler. starts and runs like stock

  4. #4
    R88ory RXP's Avatar
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    riva stage 3 with a set of the green bosch 42 injectors you will safe and run sweet as a nut, get a good prop on her and I think 75 is achevable easy enough. R88

  5. #5

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    I must respectfully disagree with GOLD06RXP. I have been running a "B" kit and 50 lb injectors with over 100 hours with a Riva ECU and no kind of fuel management system other than the stated ECU. Boat runs lower to mid 80s and never any kind of fuel (lean) issue. Same exhaust manifold--water box--exhaust valves etc. I run the boat year round---- 90 to 100 degree in the summer time and 50 to 70 degree temps in the winter. Boost in in the lower to upper 14 lb range.

  6. #6
    GOT BOOST? Dockside's Avatar
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    Quote Originally Posted by Sundance View Post
    I must respectfully disagree with GOLD06RXP. I have been running a "B" kit and 50 lb injectors with over 100 hours with a Riva ECU and no kind of fuel management system other than the stated ECU. Boat runs lower to mid 80s and never any kind of fuel (lean) issue. Same exhaust manifold--water box--exhaust valves etc. I run the boat year round---- 90 to 100 degree in the summer time and 50 to 70 degree temps in the winter. Boost in in the lower to upper 14 lb range.
    yes but were talking about stock ecu.

  7. #7
    Water4fire's Avatar
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    Ray, I believe he is talking about with his Stock ECU.

    NOT a Riva

    Lots more needs to be done to Run a Riva ecu. 50's, external IC, Valvetrain.


    .

  8. #8

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    Sounds like the consensus is the Stage3 charger and some 42s.

    I like the sound of the B-kit, 50s and ECU but I don't want to go internal yet. So right now, I guess I'm stuck with the stock ECU.

    I'm plan to put this in a RXT and I'm hoping a 14/19 prop will suffice. Maybe not but we'll see.

  9. #9
    Doel Tiburon1264's Avatar
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    Quote Originally Posted by Penny View Post
    Sounds like the consensus is the Stage3 charger and some 42s.

    I like the sound of the B-kit, 50s and ECU but I don't want to go internal yet. So right now, I guess I'm stuck with the stock ECU.

    I'm plan to put this in a RXT and I'm hoping a 14/19 prop will suffice. Maybe not but we'll see.
    Stage 3, 42's and 15/20................

  10. #10
    Moderator Snoman's Avatar
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    Quote Originally Posted by GOLD06RXP View Post
    Ya, stage 3 SC is as big as you can go without RRFPR.
    You will need a RRFPR to run this setup..I am currently running this on my wifes ski with 38s BUT i still need the reg for top end..

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