4-2-1 or 4-1 header

[V8killimports]

Originally posted by Netrisk032
right now im trying to decide on a 4-2-1 or a 4-1. i dont know what i would gain more from. i have a aem cold air and a hayame rear section exhaust on a 95 civic ex.

4-2-1 would be low end while a 4-1 would be high end... the 4-2-1 is similar ot the Tri-Y designs in the muscle cars of the 60s that are still used today, and designed to help low end torque. Again these are headers for something different, but airflow should be airflow... besides... what diff do headers really make anyways? If used with a combo of other small upgrades they can add UP TO 5% more power to whatever application used on..