INTAKE MANIFOLD UPGRADE ?

I'm running a Full Race 4G63 T4 Twin Scroll Dual 44mm Turbo on my evo build , My goal is to have 1000 Hp on my 4G63 Engine do you recommend upgrading my intake manifold to a Magnus V4 Cast Aluminum Intake Manifold ? Or my Stock manifold can handle this ?

I can't imagine any stock manifold would flow enough air to make 1000 hp. I would expect at the at HP level you would be making custom manifolds based on flow bench testing. Why don't you ask Magnus for some flow data and do the math?

As far as I remember the world's fastest Evo had Skunk2 ported intake manifold. I'm using the same thing.

https://dsportmag.com/the-cars/stm-864-whp-evo-rs-takes-the-8-second-crown/2/