[OrbitalEllipses]

Originally Posted by quik1987

Nice.

1. Does is have boxer rumble?

2. I thought EL headers kill hp due to restricted flow.

1. No. The rumble comes from the exhaust pulses passing through the exhaust when the runners are not equal length.
2. I don't know the technical terms, but I guarantee flow (measured on a flowbench) is higher on any aftermarket manifold. EL headers make more power from optimum runner lengths that separate individual exhaust pulses and then dump them at a merge at the same time. That's the basic explanation and probably contains incorrect terminology...what you need to know is that EL > UEL when it comes to making power.