Boost Problems
So June of 2024 I had a Garrett 2867 turbo installed with all the appropriate supporting parts. Tuned by Stratified. It started off good, I was hitting the desired 25-26 PSI but slowly it tapered off to about 21psi and I never got my final revision. Right now I am on the 24th tune revision and its only hitting about 21psi. I have had 4 boost leak tests done, most recently last week. We also replaced the PCV valve cover with the radium aluminum cover.
This is the work that was done last week:
Radium PVC Baffle Plate Kit
OEM PCV Hose
OEM Fuel Sensor (High)
OEM Fuel Sensor (Low)
Tial WG Diaphragm Kit
OEM Boost Solenoid
Changed EWG springs to black and green springs (13.05 psi)
My setup is:
Garrett 2867 Gen 1 turbo
Tial EWG
Tial BOV
Mishimoto intercooler
Mishimoto Air Intake
2016 Focus ST
Looking for advice on where to go from here. I dont know what more to do or why I cant hit the 25psi. Any help is appreciated. Thank you