Since the 300 CFM head has become more common with head porters learning more and sharing with on and another, does bolting a standard Skunk2 ETC manifold to it that flows ~250CFM negate all of the expensive work you just had done?

Now I COMPLETELY understand there is more to HP than head flow

Some good reading on the theory of resonate freq tuning
https://honda-tech.com/forums/showth...43#post9446243

Dark blue line is the Jg sheetmetal
Light blue is the skunk
Green is the AIR carbon
Red is Jenvey itb's
Purple is bare head



From
TBone/RLZ

 

a engine builder i once very much respected always told me flowing a head without the intake manifold you intend to use is useless.

 

Its not useless. Flowing a head without a manifold will tell you plenty.

 

Natural Aspirations,

Out of the manifolds that you have listed which would be close to a ported ITR IM? And thx for sharing!