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  1. #1

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    2017 Yamaha EX Sport

    Hey guys,

    My name is Eric and I recently purchased a 2017 Yamaha EX Sport. This is not my first time with a PWC, my family grew up with them, but this is my first personal one. I used to sell Yamaha and Kawasaki PWC at a powersports dealer, so I'm pretty well versed in what's out there. I don't expect to build a rocket or I'd have bought an 1800, but I wanted an inexpensive entry into the lake to enjoy with my girlfriend and son. I plan on building it up a little, nothing crazy, mostly to make my good friend with a Spark jealous.

    Quick background; I sell cars for a Chevrolet dealer, I can't leave anything with an engine stock for longer than the break in, I am an Army combat vet, I ride motorcycles, and spend entirely too much time on the internet.

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  2. #2

    Join Date
    Jul 2014
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    Canyon Lake, TX
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    I recently picked up an EX sport as well. i have the itch for more holeshot. its a fun ski, but need to get up a little better. I havent found anything about them since they are new and entry level. let me know what you find out about them.

  3. #3

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    So i did some digging.. The only difference between the TR-1 in the VX and the TR-1 in the EX is the exhaust manifold (called a muffler on yamahapartshouse.com)
    Now im wondering if we can swap out the manifolds, maybe they wont fit, i dont know. There is a restrictor plate in the muffler, i know you cant just go removing things without a tune, but i want to squeeze some power out of this EX. At less than 600lbs, it could potentially be a rocket!

  4. #4
    Fat Man, Little Boat Region8Ultra250X's Avatar
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    Kommander Industries / Steve Webster already has a turbo kit in development for these....

  5. #5

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    Quote Originally Posted by Region8Ultra250X View Post
    Kommander Industries / Steve Webster already has a turbo kit in development for these....
    That would be insane. I'm saving up now for the stage 1 kit from Riva. I did pull the exhaust and remove the silencer plate in there. But other than that mine is still 100% stock

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  7. #6
    Slxrider's Avatar
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    where is the silencer ring located in the ex ski? also what was needed to remove it

  8. #7

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    Quote Originally Posted by Slxrider View Post
    where is the silencer ring located in the ex ski? also what was needed to remove it
    http://www.yamahapartshouse.com/oemp...0458/exhaust-1

    part number 8. all you have to do is pull the water box, and 3 (8mm, I believe) bolts and its out. pretty simple. cant really tell a difference in sound.
    Im going to mess with the ride plate today or tomorrow, I need to pick up some stainless washers. the plate is not even close to in line with the grate, so a little shimming should go a long way.

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  10. #8

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    how much speed different was there with the restrictor taken out?

  11. #9

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    None really. Maybe .5 mph, but I only have a phone for GPS and I doubt it's accuracy. It gets up a little better though. If you are turning a little on holeshot it will hit the limiter, and it didn't do that before.

  12. #10

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    sounds like it was worth it considering its a freebie!

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