Originally Posted by 300dreams

um i thought that the hp gains of an intake couldnt be measured on a dyno because one of the principles of the cai is that it takes in cool atmospheric air from outside the engine bay and feeds it to the engine thanks to the cars forward motion, so essentially that cant be measured on a dyno. my .02

Originally Posted by SupraCoup3

what was done was an manometer test -- measuring the pressure drop in realworld driving conditions.

Also, timed runs were done.