/\ Mugen... :thumbsup:
By far the best & it's good for over 160kw...
Works with Plenums or Quads
There's a Mugen copy too (out of China), but it's not as good.
Std airbox reaches it's limit around 120~125kw
Comptech... Not a fan...
Can't say for sure if it's crap...
Just all the cars that have them seem to be... LOL
Plus it uses a puss foam filter