I KNOW this must have been asked before, but I cant find a thread with this exact info in it.

From a purely performance point of view, which air cleaner (among these 3 only) is going to
give me the best boost.

1. Screamin Eagle Heavy Breather

2. Screamin Eagle Stage 1 Air Cleaner Kit

3. Screamin Eagle Pro Air Cleaner/Breather kit.

Also, if someone knows, what is the difference between 2 and 3? they look the same to me.

Please dont suggest other options. That is not the info I am looking for

Assume for the purpose of this question that each air cleaner is used with V&H BSS, PC V, and Andrews 26 cams on an otherwise stock 96 inch.
Will one provide more of a boost than the others?

 

Nuthin huh?

hmmm.

 

I don't think I have ever seen any definitive analysis. SOme say the heavy breather has some "ram air" effect some say it doesn't. I have seen numbers of how much air each can flow but what really counts is how much air your motor can use. I would think each of the options would give you as much air flow as your engine would need. I would probably decide on what looks best. IMHO I doubt you could notice the difference in performance between any of them.