[問題] 為什麼哈雷聲音特別吵?
如題,我騎過安駕的CB400也租過一次XJ6S
對於引擎聲浪都感覺很渾厚(悅耳?)
但每次有哈雷車隊經過聲音都特別大聲
有部分甚至像爆炸的聲音
請問在沒改裝跟不刻意拉轉的前提下
是什麼原因造成這樣的差別?
另外有看到哈雷的引擎附近有一顆香菇形狀的東西
那是什麼零件,日系車好像沒有那個東西
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