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missfire

  1. Beginner Streetfighter Questions
    I need some serious help. I fightered my 2001 Yamaha YZF 600r. I ran the bike for a while without filtering the big air holes in the frame. I also took the exhaust off and ran without that for a few days. (that was like 2 weeks ago) Ive since put the exhuast back on and made filters for...
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