So a while back I upgraded to 2.5" IC piping, Z1 BA ICs, and selin dual intake with 370z filters. Ever since I have noticed what seems to be some mild compressor surge. Not a full flutter, but just a quick "rip" when I get off the gas. Is this common? I thought that I had a bad vacuum source for the recircs, but I just pulled everything and confirmed a clean line routing and vacuum.