tomsti03

Hi.
I have European sti 2003 ej207 stage 2 340hp, as it turns out that one day it stopped blowing at high revs.

The car makes a small sound and the turbo pressure drops suddenly, going from 22psi to about 14 or less from an estimated 5200 rpm.

It is as if the engine does not suck or evacuate gases.

I have changed the speed connector, coils, spark plugs, new gasoline pump, filter, checked the timing, I installed a fixed turbo wastegate, cleaned all the connections ...

It emits as a small blow and the turbo pressure drops suddenly, when before it reached 22 psi at cutoff.

Turbo looks good

What do you think it may be?

NOSSY_89

I would take a look at the intake, part that connects to the turbo and air filter. It might be cracked or collapsing on high boost.