I know you been known to be using a lot of Buschur parts and tuning them. My question is that I am getting the 10.5 hotside for my 03 Evo, would it worth for me of getting the Buschur Ported and Jet Hot Coated exhaust manifold? I know that the holes on 10.5 housing is little bigger than the stock exhaust manifold. Also would I benefit from getting the Buschur O2 housing, which is ported and coated? Have you tuned any cars with stock turbos and this set-up?
My mods are full 3' Exhuast(no cats), Cams and Gears, and 10.5 hotside.
Thanks for your help in advance.

 

The exhaust manifold would definetly help. With the 10.5 hotside, you're pushing air out faster which in turn is sucking more air in. You might be creating a bottleneck by not getting it.

Someone correct me if Im wrong.