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Discussion Starter · #1 ·

I have Husqvarna 125 sm 2009 (2-stroke). On most of electrical power valve bikes, there should be like (bzzz-bzzz) sound when key turned, I dont't get that sound. And powervalves opens at certain point, like in example I hit 7-8k rpm, then it looks like it instanly opens, sound changes, aceleration instanly increases, is it normal?

Thank you!
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