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  1. #1

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    15F waterbox mod

    Can anyone tell me the difference between putting in the freeflow and putting on the freeflow and modding the waterbox. How much louder? How much more performance . Was it worth cutting open the water box drilling it out and having it welded back together? Is there a big increase in top end?


  2. #2
    i did it and found that you dont have to cut open the box IMO found no difference .it is louder with the freeflow exhaust on but the waterbox mod makes no difference to the noise

  3. #3

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    Quote Originally Posted by phantom15f View Post
    i did it and found that you dont have to cut open the box IMO found no difference .it is louder with the freeflow exhaust on but the waterbox mod makes no difference to the noise

    Are you saying that there is no diference in the noise or the performance? If there is no performance gain I won't bother.

  4. #4
    putting on the freeflow and putting on the freeflow with waterbox mod made no difference to performance
    freeflow and freeflow with waterbox mod has the same noise
    but no matter which way you do it it will be louder than stock
    this is just my opinion but my top speed was just the same before and after i did it
    the biggest gain was the air filter ,ride plate and impeller and cutting out the middle bar from the intake grate

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