Tomei Full cast stainless manifolds, These should be a good upgrade over stock as you will see from the following photos, they surely flow better and offer less restriction and as a benefit are 1kg lighter per unit. Hopefully coupled with the ported turbos and new custom equal length downpipes that leaves the exhaust side of things as good as I can get it.
Check out how much the stock ones block the flow directly out the ports, not only is it a small hole left on the outer pipes but the exhaust flow will hit a wall and cause massive turbulence.
No such problems on the Tomei's
Much more open on the outlet side
Quite a bit larger in the middle and a better shape
They have downsides though, much harder to fit, I'm going to have clock the compressor housing just to tighten up the nut.
Stud will have to be trimmed and I'll need to turn down a spanner for the other side,
Can't fully fit up yet as they will still require some form of extra heat shielding, but I'll still run the stock heat shields as well, but it pains me because you loose the nice look. I had to modify the shields with a ball peen hammer to make them fit. They will be cerakoted silver on the inside and black on the outside.