For the last 2 days my 2009 135i has felt down on power. I pulled codes - nothing of consequence. I then did a little bit of logging - see attached graph.
A quick bit of looking around, nothing thorough, did not yield any obvious boost leaks (charge pipe, diverter valves, hoses, etc.). There is no obvious boost leak noise and no odd rattles.
My next step is to pressurize the system and do a complete boost leak check. My guess, however, is that I have a waste gate failing on one of the turbos. Is there a quick way to check for this?
Thoughts?
I was just about to sell (I have had a Focus RS on order since October 13 that has yet to get a build date - never buying another Ford
).
Orange is actual boost, grey is target.