Rattle noise!!! I heard its normal but please clarify!!

Cam1379

So I just got my 2014 370z (less than 500 miles on it)..installed the invidia cbe, no problems (as far as I knew). Then installed the stillen gen 3 cai. After I noticed a rattle noise. Not sure if it is "just the way they are" like I have read in multiple other threads. Also not sure if I just didn't hear it before I put the cai on never noticed it..I really only hear it when I am at a stop and when I am in first pulling away right when I am engaging the clutch. As I accelerate, it doesn't get louder or anything either. Like I said its a slight rattle noise. I feel like I kinda hear it when I switch gears up to 3rd gear (might be my imagination). Is this normal? I don't think its the intake bc a buddy held down the tubes as I reved it to 3k rpms and still heard it. Help me out guys! I just got this thing!!