Exhaust manifold on evo

[vaioT17]

Hi all,

I would like to know more about exhaust manifold on evo. What will be the result.?Better response in the beginning or more on high rev...?

Exhaust manifold installed. o2 housing connected to wastegate and a dump pipe was installed to the wastegate. Ori turbine.

Is the above setup suitable to evo engine?If yes, power more on low or high rpm??

Pls advise

thanks