Quote: 2. Where can flow test results for the Wix racing filters found? All I've noticed is the parts listings on Summit, et al, simply say "flow 1000+ CFM"... but it's the same "spec" regardless of size.
Even though it's from 2003, the data is still valid IMO and the preface by the poster on the test methodology is also interesting.
First off, THIS is the reason I joined Moparts and a select few sites because of valuable info like this post is getting not squabbling bs like grade school kids in the sand box..............I agree about the 1000+ cfm in different sizes and would like closer more accurate data than that. Think I`ll call em.............
I think if you call them your gonna get some bogus number.. IF they even know... you would be talking to a salesman... I agree.. I would have figured a larger difference from a 3" to 4"... something just doesnt sound right
Think I`ll call em............. 
