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  • fatbat
    fatbat
    6 years ago
    Yep all bikes ran best with open end cap. All results with open and closed end caps, number of discs etc was all tested on the dyno to get the best results. 
    Open end cap seems to show up best in mid and up high. Down low there's not much difference between open and closed caps, relative to disc adjustment (open end cap is the equivalent to about 8 discs). 
  • Gunsou
    Gunsou
    6 years ago
    http://www.hammerperf.com/xlexhaust.shtml
    These guys dynoed a number of pipes check out their page
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