Hello Zeta,

Its always nice to see actual test results.
However, almost any short runner inlet manifold would pick up significant power over the facory cvh and Zetec manifolds. The long runners restrict flow significantly - as seen by the test results.
I would like to see EGT measurements for all 4 cylinders. I hope the exhaust gas temps were measured during the test?
The EGT's will tell us about equal flow/fuel distribution in all manifolds tested.
Much more important than peak HP numbers.
Poor distribution will not show up on a 30 second dyno test, but a melted piston after 500 miles of road use.