Hey guys, ever since i bought my prelude everytime i would accelerate, when it would hit roughly 4000 rpm the sound of my exhaust would go wowowo (btw i know its funny tryna type a noise lol) like a up/down noise. Im not sure if my exhaust has a leak or if its my cat convertor.

the problem is i got no hoist to actually check it out, so id like to here ur opinions and check the possibilities.