Which is better

I'm looking to buy a cold air intake from K&N. Which is better, gaining more horse power at a higher rpm or lower rpm? And if anyone has any suggestions on which one I should get. I have a '05 Civic LX, Auto, 1.7L, 4 Cylinder.

Also, do they make headers for this car? If so, which one should I get?

You ask your self that question. Where do you drive your car more, between 2000 and 4000 or between 5000 and 7000? I'm pretty sure someone makes headers. I recommend and 4-2-1 one-piece design. Best option in my opinion.

Search around this had been brought up many times. Header on LX done right requires an EX conversion. The EX actually has 3 pipes and the header. It has the header, then the downpipe, then the midpipe, then the axleback. The LX is only 2 pipes plus header. On the LX, it goes header....then midpipe, then axleback. The midpipe on the LX goes right from the header ALL the way back. So you cant put a race header and keep the stock lx piping.