Just read the consideration part ;is it really ok what we're doing?
Your engine's intake tube isn't some necessary evil inherent to using fuel injection -- not these days, anyway. Air doesn't flow smoothly into your engine; it actually starts and stops in accordance to pressure reversion waves or "sound" coming out of the engine. The right intake and intake resonator -- no, it isn't just a muffler -- can control these pressure waves to keep them from propagating up in the tube and restricting airflow. In practical terms, you'll want to use the shortest and fattest intake tube possible, and the largest, best-flowing air filter and air-box that will fit; very long intake tubes are a breeding ground for reversion wave pressure buildup. And don't chuck your intake resonator on the general principle that it looks like a useless plastic tumor on your intake tube. Making that mistake could cost you some noticeable power.
Read more: Do Cold Intake Air Filters Really Increase Automobile Horsepower? | eHow.com http://www.ehow.com/info_12167971_co...orsepower.html