Originally Posted by shivers
You may want to considering returning or selling the DC header. I have two friends that put DC headers on their cars and both of them lost close to 12hp and 8tq in the mid-range. The factory exhaust manifold on the Prelude is actually quite good and allows for good flow. Just my $.02
What kind of header do u recommend then? I want a little bit of hp increase, but nothin insane like Mugen or ne thing, i plan on getting a new engine later on a turbo'n it.