Well first of all,

before anyone here shoots any sentences about DNA without knowing who they really are and what they do, let me inform you that the managing director of DNA has just joined this forum to promote and advertise their product, and hopefully to establish a sponsorship and distributor program with

You will see a member called DNA and that is him, I am sure he will be happy to reply to any technical questions regarding air filters, which I ask you to be polite and respectful about it.

DNA will also be able to provide dyno charts to prove the improvement obtained with their filters so let's just wait and see.