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      03-14-2020, 12:28 AM   #59
mr____p
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Drives: 2011 BMW x5m | 2001 BMW 540i m
Join Date: Feb 2020
Location: Las Vegas, NV

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Quote:
Originally Posted by Sophisticated Redneck View Post
Here is the simplified check list in order of number one causes for low boost codes: (this assumes the obvious check of all intake hoses are tight and in good condition)

1 - Bad CCV tubes (boost pressure leaks into atmosphere or crankcase)

2 - Worn Wastegates bushings - can adjust but eventually will need to be rebuilt.

3 - Bad Diverter Valves

4 - faulty vacuum pump/lines

5 - faulty pressure converters

6 - faulty tubing/solenoid for gas tank evap system (this has connection on drivers side lower intake manifold)

7 - bad wastegate actuators
Thank you, I will make sure to check all these before moving to the turbo R&R.

I noticed that there is an Extreme Powerhouse location here in Las Vegas, that sells S63 stage two turbos, ima give them a call and see if they have an actual store front here in which I can bring in the core's and get these bad boys if thats the true issue at hand.
Appreciate 0