Hi guys, i recently purchased a brand new 2015 rdx. When the engine is cold (especially in the morning), i start the engine and hit the gas. when the speed hits 20mph, i hear rattling/popping noise (usually 3 beats) for like a second, then the noise disappears and won't come up again until the next time i do the same thing w/ a cold engine (either many hours later or the next morning). I brought my car to acura's service department and they told me they couldn't find any problems with the car and that's how the car drives. Anybody encountered the same issue?
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