Originally Posted by Demo250
Well.... if anyone tells you they can feel a noticeable difference after the Zoodad, they are BSing you. It's just placebo. With that being said... it is a good idea in theory. So, why not I guess?
Well seeing you run a DIY and not a Ford AIS I would like to explain that with the Ford system you have a monster snorkel ending within an inch of the header panel causing it to suck air from below the headlights, the Zoodad eliminates that section of header panel giving it access to the front cross section right beside the radiator and just above the exterior temp sensor on lariat models creating an almost ram air affect at highway speed.
I will admit that I have never dyno'd for "performance gains" of the little mod, but common sense should tell you in this situation it helps any time you're moving forward.
I did the zoodad mod to my friends stock '05 6.0 and he will tell you right now his turbo is louder inside the cab on a completely stock truck just because the stock systems have the snorkel ending right behind the header panel creating resistance.
I will take pics if you like.