Today I switched back to my stock filter box and tube, except I changed back to the descreened maf. I think the truck idles better as well as quieter during idle. As far as performance, not sure yet, it doesn't feel like it lost any power. I want to get a K&N replacement filter and maybe fab up a new tube. I may try and see if I can get the K&N tube to fit, and see if that helps any.