I thought I remember someone saying that 4-2-1 is mainly for 0-4500 RPMs and 4-1 is for 4500 RPMs and up. Well, I don't which headers I should get. I don't have a turbo NOW, but would like to get one in the future. Just because of the fact that my RPMs go above 3000 when I accelerate on the highway from the ramp at 30 mph to 55 mph (and I'm not talking about punching it), that makes me think I should get 4-1. But even so, I can't find anywhere 4-1 headers for my '95 Civic. I checked the DC and Megan Racing websites. Maybe I'm looking in the wrong place--I don't know. Thanks for any help.

(Sorry, I accidentally added this here--I know now I should have put it in Headers, Intake, & Exhuast--but I won't double-post cuz of the rules; but please respond if you have answers. Thanks again!)

 

If you plan to turbo your car, just save your money. The turbo manifold will replace your header anyway. But if you want to keep it n/a, I'd say just get something like a Megan Racing header. Also, I honestly think the difference in power between 4-2-1 and 4-1 is like the difference in CAI's and SRI's; not even noticeable on the streets.