As promised, I have updates on my opinion of True Flow filters. They are definitely all that they are talked up to be. This filter is considerably larger (10.5" long by 5.5" wide) than the filter that came with my Injen intake so i'm sure that helped with the added pull when running through the gears. The construction of the filter seems to be very good and on top of that it is probably one of the best filters out there as far as keeping dirt out of your engine goes. On top of all that, they aren't all that expensive either..mine was about $45 online. Here are some pics....

This is on my '05 Mazda 6s by the way.