no boost, cracked manifold

[xt25det]

Recently bought a r33 project car, det manual.

Full mod list:

gt3071

op6 rear

braided lines

nistune ecu

3.5inch x force cannon

front mount cooler

turbo smart fpr

k+n

etc etc

 

It has a decent crack on the manifold Im replacing atm, engine is in great nick, low kms, great compression. Question is, is that crack enough to lose basically all boost? 

Hasn't been tuned. 

[Jordy32]

Exhaust gas will flow the path of least resistance, easier to flow out of a crack into the atmosphere than to push a turbine wheel.

How big is the crack?

[xt25det]

No pic on me, but decent, like 3cm, maybe 3mm wide, top where the pipes meet up to engine. Previous owner did some dodgy welding to try and fix but I assume it just re-opened. Looks like a ebay cheapo. Car drove fine but like NA. 

[KiwiRS4T]

Not a stock manifold? Don't replace with stainless get a proper steam pipe type.

[xt25det]

28 minutes ago, KiwiRS4T said:

Not a stock manifold? Don't replace with stainless get a proper steam pipe type.

Nah it s stainless ebay bro, real shitty job.