I own a 2004 Honda City VTEC - stock engine. Everytime I hit 80 Kph may naririnig ako na humming sound na nangagaling sa likod (i think from the exhaust yung sound). Yung tunog nya ay parang may 400 cc na bike na malapit syo. I asked a friend who owns a 2003 Honday Civic and he said na it's because of the VTEC engine and its normal.
Ask ko lang para sa mga VTEC car owners kung normal po ito. Thanks!


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