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  1. That 13/20 is too much prop for your setup....

    That 13/20 is too much prop for your setup. Switch to a 13/18 and you will pick up 200-300rpm and 2-3mph.
  2. Your water temps change that drastically day to...

    Your water temps change that drastically day to day? And you've verified air density altitude did not change between those runs on different days? I'm not suggesting you're wrong or that it's not...
  3. Reaper, can you share some more info about your...

    Reaper, can you share some more info about your setup? Your limit may be 8600, but what is your running RPM? Your prop could be holding you back. My friend was hitting 86mph peak and 84mph...
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    I have an ET18 setup on an SHO engine spinning...

    I have an ET18 setup on an SHO engine spinning 8850rpm with 15 hours on it. So far so good on 93 octane. ET claims my setup is capable of 400hp, but I'm not sure how accurate that claim is.

    EDIT:...
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    You need to consult your tuner and discuss how...

    You need to consult your tuner and discuss how much boost you'll be running and fuel octane you intend to use. There have been guys on here that have blown their engines from getting too aggressive...
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    To the best of my knowledge none of those...

    To the best of my knowledge none of those settings, other than S7, was in the manual. I think it's one of those consult R&D who's no longer in business or your tuner type of deal. For what it's worth...
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    That's C1 boost for those revs. For what it's...

    That's C1 boost for those revs. For what it's worth, I was making the same boost with my c3 when the clutch was slipping. Like you, I was down 300rpm in same weather conditions. How many hours are on...
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    Tommy was one of the kindest, knowledgeable and...

    Tommy was one of the kindest, knowledgeable and helpful people I have ever had the pleasure to converse with here on the forum. Like someone else said earlier, when he posted you read it. Very cool...
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    Sticky: Hope to see a 2021 GP1800R SVHO vs 2021 RXPX...

    Hope to see a 2021 GP1800R SVHO vs 2021 RXPX video from you and Kevin next year. Always enjoy the reviews and comparisons you two do together!

    Jerry, were the 2021 boats there for you to check out...
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    Good to know. In that case I can certainly see...

    Good to know. In that case I can certainly see where it's not worth the hassle. Must have had a pretty solid 93 flash to begin with. I hear these motors like to be around 22-23 degrees. I would have...
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    How much timing were you able to add in the back...

    How much timing were you able to add in the back to back test you conducted?
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    893

    I've seen some guys claiming to be running fixed...

    I've seen some guys claiming to be running fixed maps, fixed boost, and consistent AFR with pump E85. My understanding of a flex fuel sensor in vehicles was when to tell the engine to switch from is...
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    Kroozer, thanks for the info. Can you please...

    Kroozer, thanks for the info. Can you please clarify this statement? Did you not even change the tune to run the E85 when you saw the 150rpm gain? Or did you throw more timing at it to take advantage...
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    With all do respect, I am looking for personal...

    With all do respect, I am looking for personal experiences from people who have ran or are running E85 on their SHO or SVHO powered waverunner. Not discrediting any info you have shared. I'm sure it...
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    How fast does it separate? How long can it sit in...

    How fast does it separate? How long can it sit in a gas tank before it becomes detrimental to engine performance? Have you ran it in your ski when tuned accordingly for it?
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    893

    Is anyone who has ran or is currently running E85...

    Is anyone who has ran or is currently running E85 in their ski actually incurring any of these issues?
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    Why switch? First, as mentioned in the OP, the...

    Why switch? First, as mentioned in the OP, the price per gallon is 30-40% cheaper than 93 octane gas in my area. I know that fuel consumption with E85 will be 20-30% higher. So from a financial...
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    Is E85 right for me?

    I'm kicking around the idea of switching to E85, but am not sure if it's right for me. It's readily available in my area and currently $1.66/gal versus $2.75/gal for 93 octane gas. Local station...
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    I have checked the entire Yamaha pump and...

    I have checked the entire Yamaha pump and handling section of the store and could not find it. I assume it was an R&D product that has been discontinued since they went out of business?
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    I'm being told the water pickup issue can be...

    I'm being told the water pickup issue can be resolved with a die grinder. Is a lot of grinding involved or is it pretty straight forward?



    Tommy, I'm looking at a Solas Concord 13/18 intended...
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    Converting '13 FZ to 160mm prop

    Trying to get some clarification on what is required to do this, so I can better understand the cost.

    First, it appears as though most people suggest running the 160mm props intended for the SVHO...
  22. Wasting money on a prop if you're going to leave...

    Wasting money on a prop if you're going to leave the stock tune in it. It's governed. You'd be better off going with a Stage 1....
  23. Jhb, it looked too low to me in post #'s 6 & 7....

    Jhb, it looked too low to me in post #'s 6 & 7. Post #8 with no shims looks better. You definitely do not need two shims on each side up front. Did you run it yet?
  24. Something is not right if you lost speed and the...

    Something is not right if you lost speed and the only change to your setup was the plate. Can you take a pic from the side? I wonder if it's hanging below the grate/transom area. It should be stepped...
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    I hope it doesn't. The only change I would like...

    I hope it doesn't. The only change I would like to see is the supercharger replaced with a turbo charger.
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