I will be using the filter with NO airbox lid. I have heard rumor that Sparks breathes better but Uni catches more fine particles. I guess some of that depends on the filter oil.
I forgot to mention... I have a billet ring that came with my K&N Pro Flow kit. Looks the same as the one on the Sparks page.
I forgot to mention... I have a billet ring that came with my K&N Pro Flow kit. Looks the same as the one on the Sparks page.