Well my dad ordered the TRD cold air intake for my mom's matrix and I installed it onto the car. It makes a great different up top. I didn't really notice much of any difference down low but I expected that. It sounds soooooooo much better now. I am trying to convince my dad to get the TRD exhaust now just to help the sound a little better(if he gets exhaust it will only be TRD since he gets TRD parts cheap as he is a parts manager at a Toyota dealership). I am also trying to convince him to get a carbon fiber hood. After installing the cold air intake really makes me want a matrix(I have always loved the looks of them) for my daily driver. I think once I find a job down here in AR I am going to get rid of my camry and use it for a down payment on an XRS(my mom's is only an XR). Incase you guys don't know here is a list of all the mods done to my mom's car:
rear spoiler, 17 aftermarket rims(don't remember what kind), Toyota fender flares, TRD front and rear adjustable sway bars, TRD strut bar, TRD lowering springs, TRD carbon fiber engine cover, TRD cold air intake, carbon fiber dash inserts, MAtrix door sills, upgraded the keyless entry to the alarm system,TRD grill. Here are the pictures: