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      03-02-2014, 06:17 PM   #8391
chepy24's Avatar

Drives: 2009 alpine white 335i xdrive
Join Date: Nov 2013
Location: denver

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Originally Posted by Allen@PTF View Post
There is two different boost measurements taken by the AP. There is absolute PSI which is what the DME uses for boost targets and then there is "boost" which is basically just for display purposes and is dispalyed in PSIg. Which is where your confusion is coming from. Compare boost mean abs and req boost abs NOT boost(psi).

PSIg + atmospheric = absolute PSI

As far as your log is concerned it looks pretty good aside from the boost oscillations you're having down low.
ohhhhhh ok got it! thanks still learning but that is why i love these forums! on that boost oscillations is that something that is normal? i was told could be wastegates??? iv also heard those can be fixed when i get my custom map is that right?