Hi,

i have a problem in a friend's car. It's a Cosworth 3dr with exhaust manifold and turbo of a 4x4.

The turbo can not peak more than 19 psi and holds 13,5 psi.

the turbo it's a new turbo technics s113 with a 360º bearing. I don't see any air leaks.

the car has not the amal valve, it has an air leak in the wastegate to setup the pressure

can be a problem with the new turbo??