I love that woosh sound. Shortly after that video I changed my filter to the latest by ITG which is bigger, same diameter just sticks out more by about 3cm. They've also upgraded the inside which now carries a bunch of "vent channels" that direct air into the intake pipe, it's not stuffed with foam. Previous filter (on video) had no channels, whole inner area was just a solid piece of foam. New filter provides more air supply and it's slightly louder. Rated at 500+ bhp (intake diameter is 93mm).