Consider this; you call it a cold air kit right? The factory air box actually draws air in from outside the engine compartment; truelly a 'cold air intake' in my mind. Some guys install an aftermarket kit that draws its air from the engine compartment; hmmmm. Please understand I am not being critical; I just want you all to think this out. What I did was buy a KN drop in air filter into my factory box. That took 0.05 off my 0-60 time. I then drilled out the spot welds that hold the little scoop thing onto the outside of the inner fender, in the wheel well area. I gained an additional .15, for a total of .2 reduction.