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  1. Depends on RPMs of course but I pulled 13.07 PSI...

    Depends on RPMs of course but I pulled 13.07 PSI bone stock with limiters removed, revving 8080. Boost went up to 14 PSI at 8260, 15 PSI at 8400 with a 4" air intake.
  2. Here are your options ...

    Here are your options



    https://www.4-tecperformance.com/images/ET142.jpg
    Engine Tech Sea Doo 142mm Upgrade for 300HP skis
    The all new ET 142mm x 3.2mm spacer do it yourself. New generation...
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    I think I have some numbers. I have an 05 Riva...

    I think I have some numbers. I have an 05 Riva pro ecu and a stock 300 charger. Let me see what I can find.
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    WTB I have used this tool many times. It works...

    I have used this tool many times. It works awesome specially if you're doing this on a regular basics. If the drive shaft is a bit rusty, That's when this tool SHINES!!!
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    WTB Huh... I have one- It works fine for me.:smt102

    Huh... I have one- It works fine for me.:smt102
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    You may have a few issues going on, not just one....

    You may have a few issues going on, not just one. As others mentioned, the Riva ECU rev limit is 8650, and YOU NEVER WANT TO HIT OR SIT ON THE REV LIMIT - THIS will blow head gaskets all by itself. ...
  7. Why would you need to go open loop at only 8650...

    Why would you need to go open loop at only 8650 RPM? People spin over 9k without open loop. It sounds like you have some other issue and going open loop would just mask it till something blows up.
  8. Also, did you check to make sure your coolant...

    Also, did you check to make sure your coolant pump impeller is not stripped from the shaft? It turns via the oil pump, and sometimes lets loose from the shaft. Ski will overheat if it strips.
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    Ended up drilling the hole & the problem got...

    Ended up drilling the hole & the problem got solved. Still think the seller is an idiot for not doing it in the 1st place. He knew what year the hull was that the engine was going to be installed in...
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