i can standbehind my AEM cold air intake makes my exhaust louder gianed 6.3hp more over my resent injen short ram intake and the looks as well plu added a throttle body spacer to make a loud hissing sound like a mini turbo lol gained abit more power off of that as well. since i am only taking colder denser air without heat soak.

 

I can add HP to the z-tube and K&N setup for anyone in Socal. PM me if you are interested.

 

I am buying a 06 z tube and box for $20 tomorrow. I would like to upgrade to a Amsoil airfilter (cone style) I have searched but I haven't found a part number that would work for it. Anyone have any ideas? Thanks