how many are running them? and how many changes are they going to make. i hear most have to modify the maf hole in it. as well as tube designs being different and the holes not lining up. any experiences.

 

What kind of gains are they getting? WHat do they look like?

 

here is a link to the manufacture.
http://www.airforceoneperformance.co...ts/f150-04.php

i believe that most people are claiming 20 hp with them. but i am also hearing that they do not make much power above 5000 rpm,s. and that they are not shifting these engines above 5200 to 5400 max.