Quote Originally Posted by Wh1stl3r View Post
Kelangan kasi talaga ng papasukan ng probe ng boost gauge. That's the only way I know how to check if the turbo is working properly.

Did they give you a graph of your AFR? You could just compare the stock run with other people with the same engine. 119Hp at the wheels on their dyno looks just about right for the GS if that's the CRDi version. Paano nila nasabing may sira ang turbo mo?
turbos have ala-"pitot tubes" (small diameter tubes) to measure boost reading on the discharge side of the compressor afaik....connected to the boost compensator in an injection pump (diesel) as well as the wastegate controller.

insert a t-fitting in between the boost line and connect a boost gage...