Mitsubishi TD04 Turbo Blow Off Valve ( BOV) Repair Kit

Fits

-      SAAB 9-3 Aero TD04L Turbo 

-    VOLVO TD04L, TD04H, TD04HL Turbo

-       Hyundai Genesis Coupe TD04 turbo

-       Dodge SRT-4 TD04LR / TD05HR Stage 3 Turbo

-       GM 2.8L TD04HL Turbocharger

…all Mitsubishi turbo with such BOV.

K5t09678

Bought from my Saab 9-3 2007 but have since sold the car, brand new in box, 

Could be the culprit if you are loosing boost pressure on full throttle as the old diaphragms leak due to age.