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  1. #1
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    Cool The $40 Straight Pipe Exhaust

    Here is what I did to make a straight pipe exhaust, which sounds absolutely incredible. I did this on my 2up, while my 3up remains stock.

    (1) 18"L x 2.5"W exhaust pipe
    (2) 2.5" 45 degree exhaust elbows
    (4) 3" hose clamps
    *optional* (1) Can of high temp engine spray paint of your color choice

    Minus the can of paint, it cost me $40 to do this. I could have saved $13 because you really only need 1 elbow. You can use the upper elbow from the stock system.

    Cut 3" off the exhaust pipe and then spray paint it, let it dry while you take the ski apart. I removed the steering connections, main harness connection, bolts for the engine compartment and rear section, and lifted the body from the rear tow loop. I put in jackstands on top of the styrofoam on either side to hold it up (did this job alone so I didn't have someone to help lift it entirely off). Removed the clamps and connectors, and then the stock resonator. Don't forget to slice the exhaust port off the resonator and use that to connect the lower elbow to. Once all of that was out, I put in the new elbows and clamps and then slid the pipe into place. Bolt it all down, re-assemble the ski and you're off to the races.

    The exhaust sounds incredible, added just a hint of lower end power (could just be my imagination), and the throttle seems a little more responsive.

    Once my tuner comes in, I can't wait to see how well it opens up. I'm sure I will update this with additional pictures and a video from the GoPro this weekend.

    Click image for larger version. 

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  2. #2
    Cool! Plus you have the added advantage of "sink proofing" it in the event of an exhaust overheat.

    You said it feels a little more powerful? Hey, can you post some video or sound clip, would love to hear it!

    edit: just took a closer look at the photos. Is it me, or are those hoses kinked slightly now? They just look a little like the bends are a bit extreme for what the original angles called for. Doubt it makes a difference for exhaust volume requirement but just wondered...

  3. #3
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    Yes, ever so slightly. But there was no way around it. Not more than a few degrees, but it's only the upper that is slightly over bent by a few degrees.

    Video clip coming shortly.

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  5. #4

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    Click image for larger version. 

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    why you put straight pipe and not with corners as the original is?

  6. #5
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    The idea is to increase performance by eliminating the distance from point to point. Yours looks great, but I preferred to do mine the way most of us car guys would - straight through.

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  8. #6
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    Keep in mind that the camera is in a waterproof housing and the sound is affected by it.


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  10. #7
    boost junkie skidoochris's Avatar
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    if you worried about bends put a thru hull fitting in the back
    and then the drone from the exhaust echoing in the tunnel will go away

  11. #8
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    I can deal with it now. Let's see how I deal with it over 8 hours of riding this coming Sunday. Going to do some reef diving right off the coast and then do a 100 mile cruise.

  12. #9
    Ramps's Avatar
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    Nice....Maybe try a simple zip tie where the kink is and tighten it a little....But it looks great I just modded mine a little and included the V-Tech tune and holy SH!#, you will be amazed.......

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  14. #10
    WE0H's Avatar
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    Quote Originally Posted by Ramps View Post
    Nice....Maybe try a simple zip tie where the kink is and tighten it a little....But it looks great I just modded mine a little and included the V-Tech tune and holy SH!#, you will be amazed.......
    What E85 tunes have you tried so far? The other day I flashed mine with the E85 102 Final tune. Don't have any other mods done yet, just the tune. Seriously quicker

    Mike

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