do the filters add any noticeable grunt to the motor sound. i like how my exhaust sounds after around 4k rpm's, but the motor sounds kinda boring and mechanical. i had a neon when i was younger as my first car and when i put an aem cold air intake in it it sounded pretty mean for a 4 banger. that had a k&n filter too, so hopefully these could do the same thing. im not really hopeful about gaining any hp, you might get 2-3, but the sound is what im really looking for. it tends to make you feel faster than you are.