Ported manifold.

[Keira]

This can help with fuel atomisation in the airflow as well...

not on the exhaust manifold it wont :lol:

 

[deslynam]

Thought I'd specifically mentioned the inlet one, perhaps not quite obviously enough?! LOL

 

[Keira]

it was obvious

but obviously pointless in a thread about exhaust manifolds :lol:

 

[Swampy]

Thanks for all your input lads.