I wonder how you can make one CAI
perform much better than another. It's just a large wide tube with a filter on it.
The idea is there is no obstruction getting air into your engine.
So I doubt there is little difference in performance.
However I DO believe there is much difference in quality of the filter, the tubing (maybe the paint/powdercoating will come loose and go into your engine) and fitment.
Besides telling you have Injen
sounds way better than telling you have a no-name