Been fighting boost creep ever since I fix the exhaust leak
Try increase back pressure by put back Cat n silencer it help but still creep after 6000

So finally decide to upgrade to wastegate

Man talking about the size different !!
Will report tonight when I finish the install !!

 

The reason of Boost creep the location of wastegate , last owner install in such funky location with knight sport hight flow , there is no way 38mm wastwgate will be enought !!
But beside that , every thing work fine, lets why decide still keep same location , but just upgrade the wastegate instead

 

High velocity spot with bad entry angle means you need a lot of wastegate surface area.

 

PO placed the wg right on the hotside of the turbo?

 

That's right, but still cheaper to build manifold



Here anther forum members idea

 

The 40mm wastegate was on hot side since 2000
So no problem yet
J