ok i want to get an intake. i saw some newspeed p-flows around for about 140. and alot of ppl have then but i also read you get 5-7 hp gain from it. thats not alot. and i havent seen any cai. does our cars have them? and the are the intakes on ebay any good? i dont wanna spend alot of money for a min gain of hp. but i want a nice loud sound. any suggestions.