Tony,
I checked the hoses, and I didn't feel a leak.
I took my time to see if I could feel anything else, and nothing was leaking or anything.
Do you think it's caused by the stock K&N air filter? Is it making a hiss while sucking in air?
Thinking of it now, I should put the paper filter back in and see if the sound changes. I'll do that later today, and report back.
Thanks again Tony.