Hey guys - recently my 13 Sky with 58k started making this droning vibrating engine sound when its using all its torque around 1800-2500 torque and quickly vanishes as soon as the rpms get higher and sounds smooth - its hard to explain and first thought it was engine mounts in which passenger #3 mount and all the ones atop the dealer replaced just now under warranty. Sound is still there and more pre-dominant when using the AC in which the engine has to work harder.
Im thinking it would maybe be the non OEM air filter installed a few months ago before I start chasing the dealer again?