6

Too long for comment, but I suspect wastegate linkage or door not closing fully due to distortion from heat (it's really hot around there). You could try and get it hot enough to duplicate the problem, park, and attempt operate the wastegate manually with pliers or gloves... but it's tricky to get to without removing the turbo heatshield. Also make sure ...


5

Based on what you're stated in the question, it sounds as if your turbo is basically working – so the question is how to figure out what, if anything, is wrong and causing low/absent boost at times. Ideally, you'd have access to a tool that would plug into the diagnostic port and enable you to compare the requested boost from the ECU with the actual boost ...


3

I have no expertise about your specific car however I want to point out that a typical root cause for this behavior would be a damaged vacuum line controlling the vacuum actuator of the variable vane turbo. Chances are that the line got damaged (possible by some marten).


3

The TDO5 16g flows a lot more air than a T25 (520cfm vs. 405, according to this ), so you should expect it to be laggy. On the plus side, once you get higher in the power band, you should be making more power. If you haven't upgraded your fuel injectors (and possibly your fuel pump) you should keep a close watch on your A/F ratio, as if you exceed your ...


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