so i recently orderd a SLP intake and i am wondering will a K&N or blackwing air filter really increase your horsepower? ANd is the filter worth the 50 bucks?

 

whats the car??? anywho a true cold air intake by k&n has been dynoed and proven to make anywhere from 15-20 hp. i have one on my z28, and i can hear it, and feel a little bit...so yes its worth it. if you just change the filter, no it wont. if you dont believe me, simply take out your filter, and drive around the block... any difference?