who has and APEXi N1 dual exhaust?

[ImportMatrix240sx]

how loud is this exhaust on a scale of 1-10 and what kind of hp gains can i expect.  is there a noticable difference in power?

[KiDyNomiTe]

There should be a review on the main pahe, and I am sure the search will get you tons of reviews, and if you go to the tech section on the main page you should find audi clips of the dual and single