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  1. #1

    exhaust question

    Whats the big difference between the free flow exhaust and the rear hull exhaust? any huge power difference?

    Im just not up for drilling a hole in my pwc.


  2. #2

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    Im also in the market for the best performance exhaust ugrade. What are the options/benifits?

  3. #3

  4. #4

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    Jeeze! Thats way too much stuff to read after a day at the beach drinking Rum Runners!!

  5. #5
    Gus13letter's Avatar
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    I had both with a modified waterbox and like the rear exhaust much better. There is less drone with rear exhaust. As far as performance gains I am sure there is a slight difference, but not sure the exact. I would guess maybe 30 RPM or so.

  6. #6
    is that 30 rpm difference between the two or only 30rpm gain from exhaust period

  7. #7
    Gus13letter's Avatar
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    Quote Originally Posted by boostedblast View Post
    is that 30 rpm difference between the two or only 30rpm gain from exhaust period
    I am only speculating that you would see about 30 RPM gain going to a rear exhaust vs just the free flow design. I could be wrong, but seems that it flows better with rear exhaust. If you ever think you will buy an external intercooler do a rear exhaust because you will need it with most external intercoolers. That way you arent buying two different exhaust systems. I would reccoment to sit down and think of what mods you want to eventually do because it is all a domino effect. If you plan on doing rear exhaust you will need to remove the OPAS. So keep that all in mind.
    Last edited by Gus13letter; 06-29-2008 at 09:11 PM.

  8. #8

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    If I were worried about how loud my ski was, I would flare the j-pipe and modify the water-box by cutting it open, cutting off the internal pipe, and drilling holes in the baffle. Leave the resonator. It will barely be any louder than stock, but get you most of the improvement that people are seeing with aftermarket exhausts.

    Mike

  9. #9

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    The biggest difference is how much the through hull cleans up the engine compartment, everything stays on the port side.

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