[問題] 排氣管上面有洞是正常的嗎?
最近買了一個二手的原廠迅光排氣管
剛剛收到貨 發現排氣管上有一大一小的洞
如圖
大洞 http://ppt.cc/MZUI
小洞 http://ppt.cc/QS8F
http://ppt.cc/lZP0
因為沒有買排氣管來裝過所以不太清楚
雖然形狀都滿圓的 但大的洞邊緣比較明顯是鑽出來的
所以有點疑惑
請問這樣是正常的嗎?
謝謝!
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