After I installed the Stillen CAI and after driving one week, I did begin to notice a little less power off the line. In read the thread about Injen...it would seem that is somewhat normal. Is it? I did like the sound over stock and over 4K the power does seem more linear to me. Think about added the Crawford V5...would this mod put back the lower end of the power band? Guys with the Crawford and Stillen are you happy with the combo overall? Thanks guys...great form!!