I have recently bought a 67mm tb from CFM. I was wondering if I need an adaptor or another coupler to install it with a hypnotic intake?

Yes you will, it will be to big to stretch over it.

measure the 67" and the intake tube diameter. Take these two measurements and look for a company on the net that sells Vibrant Silicone Hoses and find the size that fits best. So its better to be a tiny bit (I say a tiny bit smaller) then a tiny bit bigger.