most all of the aftermarket stuff out there is junk and will cause you problems ,
the k&n filters are some of the worst, along with the other intake systems( i have a 6.0 05 ford in my shop now that sucked water and bent all the rods because of the aftermarket intakes ),--
i see more problems with aftermarket hang on goodies than i care to note .
02 chevy 2500hd 4x4 d/a crew cab sb srw,20k easy rider air ride hitch,air lift bags with compressor for bags and hitch,edge ez juce box and hyperchip,jena my girlfriend a 140 lbs french mastiff and a 175 lbs english mastiff. living in an 02 40' trip