4-1 or 4-2 Options

[Jared95]

bout to get a header for the 7afe....but am curious which is better a 4 into 1 or 4 into 2?

[Hanyo]

there is no such thing as all around better header design Or why would any manfacture 4-2-1 header or 4-1 header if one design was superior to the other.

It depends on what you want from your engine.

4-2-1 header allow better mid range power. But it does not free up the high rpm power as well compared to 4-1 header.

So it depends on what you use your engine for? Strict drag racing? then you want 4-1. If you want to use it for street and short tracks, then you want 4-2-1.