Back to basics....L vs. HD Pulley Combo's...Explained in Chart/Graph Form

[jonolds72]

bone stock no filter no nothing. Before install 6lbs after install 12lbs.
That was many years ago now. but i did do the test to check

How can i argue numbers right.
You say cold air. it was the same air for the 6lbs as it was for the 12lbs

Seems between my completely stock setup, and your maybe add 2lbs here lose 2lbs there
Mine is more accurate. But you have a graph that shows no real world info all theoretical

]

+1
my first mod was a 8.5 lower (so called 4lber) and my increase was 4lbs total boost 10psi. no cai, nothing just a pulley and a predator.
then i went to a 9 inch lower, and i saw 12psi, still no intake or any other mods.
i see size of pulleys of net increase over stock weather it is a lightning or harley
that is my understanding (not sure if it is correct or not, but that is what makes sense to me)

[havinnoj]

I was under the impression that an intake- fipk - wouldn't do anything for increasing boost or power. Or is it just a negligable amount?

PS - awesome thread unfolding here!