Thanks for the help. So far it's very faint. It's kinda like a woofing sound I guess. It causes slight turbulence you can feel in the pipe if you touch the pipe when it's doing it. Idle is stable. It's very faint now. I need to buy a new air filter since my old stock one is pretty restricted hence the reason I originally tried changing then Ima try to do the mod for it cuz it definitely changed the driving performance with that stock setup over the aftermarket intake system, seems more delayed response and less power now so hopefully that mod helps! But atleast the noise is just about gone when entering lower rpms! I'm gonna hopefully get new hoses tomorrow and check for leaks the rest of the way. I'm not sure if im forgetting anything or not to do

 

You need to get all the hoses and vacuum lines sorted out.