I have a 93 FD and I notice loud mooing from the intakes (HKS RS) when throttle is very light. What potential harm is this capable of and why is it happening? It gave me a headache when i drove my FD for 10 hours straight.

 

Could just be the sound of the air coming into the filter.

 

so i did some research and its actually the air pump making that gay noise. makes me feel like something is broken in my engine bay hahahaha