I think he's trying to get a straight up answer such as:

a) 20whp
b) 30whp
c) 40whp
etc...

NeedsWings' website published that the ASP 178mm pulley by itself gains a modest 20whp, with most people getting much more, especially combined with a tune.

So with that logic, with the 185 I am assuming between 20 and 30? It spins a lot faster than stock but between a 178 and 185? 185-178=7mm difference. I can't imagine it can be anything groundbreaking above the 178mm's numbers.

I am interested to know if anyone had both 178 and 185 pulleys and can share their real experiences with them. I ordered the 178 because I read it produces a little less heat and quite a few members here have the 178 setup, so I am following in their footsteps. I was really tempted at the 185 though, I won't lie to ya.