I just got done installing the C&L True Flow Intake and the Diablo Sport Predator tune on my '06 manual GT and now I hear a sucking noise when I hit the accelerator hard. If I have it in neutral and hit the throttle to rev it up I hear a brief noise that sounds like it's sucking in air somewhere that it shouldn't be. I checked all the connections for leaks and couldn't find any. It sounds like the noise comes from the filter...is this normal...just the filter sucking in air?