Audi q7 will sound when stepping on the accelerator at a constant speed.

The reason for this noise is: 1. The air filter you replaced is an auxiliary factory filter. The filter in the sub-factory is relatively small, the filter box is not closed properly, or the filter box is not installed in place, the clamp is loose or the bolt is not tightened in place. 2. There is a crack in the intake pipe, that is, the hose between the filter box and the throttle valve (it is not easy to find, and it is easier to observe when it is removed), and there is a crack when it is intake.