Whenever I blip the gas pedal in neutral or while I'm driving I get this weird sucking noise. It sounds like a reverse exhaust leak. It only does it when the engine RPMs are coming down. I took a video, it's kind of hard to hear but it's there. Thanks in advance.

 

for the idiots that are going to say its just a picture.. click the image to watch the video.

OP, do you have test pipes?

 

Yes, I have test pipes.