is anyone using it and what are your opinions?

 

I have the matte black intake pipe, with perrin drop in. Looks completly stock! Thats the way i like it.
All the other intake pipes are about the same and will net the same power gains. It all goes down to looks.
I love how Nisei relocates the bov return pipe to the bottom so you can't see it. It looks so much better. Mitsu should have done it this way.